Fix low-level OHCI transfers for PPC440EP (same as ARM920t and MPC5xxx).

Patch by Stefan Roese, 2 Aug 2005

1 files changed, 606 insertions, 612 deletions

diff --git a/cpu/ppc4xx/usb_ohci.c b/cpu/ppc4xx/usb_ohci.c
index 6176709f20..d53909e4e2 100644
--- a/cpu/ppc4xx/usb_ohci.c
+++ b/cpu/ppc4xx/usb_ohci.c
@@ -1,5 +1,5 @@
 /*
- * URB OHCI HCD (Host Controller Driver) for USB on the PPC 440.
+ * URB OHCI HCD (Host Controller Driver) for USB on the PPC440EP.
  *
  * (C) Copyright 2003-2004
  * Gary Jennejohn, DENX Software Engineering <gj@denx.de>
@@ -43,6 +43,7 @@
 #include <malloc.h>
 #include <usb.h>
 #include "usb_ohci.h"
+
 #include "usbdev.h"
 
 #define OHCI_USE_NPS		/* force NoPowerSwitching mode */
@@ -64,7 +65,7 @@
 #define dbg(format, arg...) printf("DEBUG: " format "\n", ## arg)
 #else
 #define dbg(format, arg...) do {} while(0)
-#endif				/* DEBUG */
+#endif /* DEBUG */
 #define err(format, arg...) printf("ERROR: " format "\n", ## arg)
 #ifdef SHOW_INFO
 #define info(format, arg...) printf("INFO: " format "\n", ## arg)
@@ -75,7 +76,7 @@
 #define m16_swap(x) swap_16(x)
 #define m32_swap(x) swap_32(x)
 
-#if 1
+#ifdef CONFIG_440_EP
 #define ohci_cpu_to_le16(x) (x)
 #define ohci_cpu_to_le32(x) (x)
 #else
@@ -97,6 +98,8 @@ urb_priv_t urb_priv;
 int got_rhsc;
 /* device which was disconnected */
 struct usb_device *devgone;
+/* flag guarding URB transation */
+int urb_finished = 0;
 
 /*-------------------------------------------------------------------------*/
 
@@ -112,29 +115,21 @@ struct usb_device *devgone;
 			temp = readl (&hc->regs->roothub.register); \
 	temp; })
 
-static u32 roothub_a(struct ohci *hc)
-{
-	return read_roothub(hc, a, 0xfc0fe000);
-}
-static inline u32 roothub_b(struct ohci *hc)
-{
-	return readl(&hc->regs->roothub.b);
-}
-static inline u32 roothub_status(struct ohci *hc)
-{
-	return readl(&hc->regs->roothub.status);
-}
-static u32 roothub_portstatus(struct ohci *hc, int i)
-{
-	return read_roothub(hc, portstatus[i], 0xffe0fce0);
-}
+static u32 roothub_a (struct ohci *hc)
+	{ return read_roothub (hc, a, 0xfc0fe000); }
+static inline u32 roothub_b (struct ohci *hc)
+	{ return readl (&hc->regs->roothub.b); }
+static inline u32 roothub_status (struct ohci *hc)
+	{ return readl (&hc->regs->roothub.status); }
+static u32 roothub_portstatus (struct ohci *hc, int i)
+	{ return read_roothub (hc, portstatus [i], 0xffe0fce0); }
+
 
 /* forward declaration */
-static int hc_interrupt(void);
+static int hc_interrupt (void);
 static void
-td_submit_job(struct usb_device *dev, unsigned long pipe, void *buffer,
-	      int transfer_len, struct devrequest *setup, urb_priv_t * urb,
-	      int interval);
+td_submit_job (struct usb_device * dev, unsigned long pipe, void * buffer,
+	int transfer_len, struct devrequest * setup, urb_priv_t * urb, int interval);
 
 /*-------------------------------------------------------------------------*
  * URB support functions
@@ -142,11 +137,11 @@ td_submit_job(struct usb_device *dev, unsigned long pipe, void *buffer,
 
 /* free HCD-private data associated with this URB */
 
-static void urb_free_priv(urb_priv_t * urb)
+static void urb_free_priv (urb_priv_t * urb)
 {
-	int i;
-	int last;
-	struct td *td;
+	int		i;
+	int		last;
+	struct td	* td;
 
 	last = urb->length - 1;
 	if (last >= 0) {
@@ -163,218 +158,228 @@ static void urb_free_priv(urb_priv_t * urb)
 /*-------------------------------------------------------------------------*/
 
 #ifdef DEBUG
-static int sohci_get_current_frame_number(struct usb_device *dev);
+static int sohci_get_current_frame_number (struct usb_device * dev);
 
 /* debug| print the main components of an URB
  * small: 0) header + data packets 1) just header */
 
-static void pkt_print(struct usb_device *dev, unsigned long pipe, void *buffer,
-		      int transfer_len, struct devrequest *setup, char *str,
-		      int small)
+static void pkt_print (struct usb_device * dev, unsigned long pipe, void * buffer,
+	int transfer_len, struct devrequest * setup, char * str, int small)
 {
-	urb_priv_t *purb = &urb_priv;
+	urb_priv_t * purb = &urb_priv;
 
 	dbg("%s URB:[%4x] dev:%2d,ep:%2d-%c,type:%s,len:%d/%d stat:%#lx",
-	    str,
-	    sohci_get_current_frame_number(dev),
-	    usb_pipedevice(pipe),
-	    usb_pipeendpoint(pipe),
-	    usb_pipeout(pipe) ? 'O' : 'I',
-	    usb_pipetype(pipe) < 2 ? (usb_pipeint(pipe) ? "INTR" : "ISOC") :
-	    (usb_pipecontrol(pipe) ? "CTRL" : "BULK"),
-	    purb->actual_length, transfer_len, dev->status);
+			str,
+			sohci_get_current_frame_number (dev),
+			usb_pipedevice (pipe),
+			usb_pipeendpoint (pipe),
+			usb_pipeout (pipe)? 'O': 'I',
+			usb_pipetype (pipe) < 2? (usb_pipeint (pipe)? "INTR": "ISOC"):
+				(usb_pipecontrol (pipe)? "CTRL": "BULK"),
+			purb->actual_length,
+			transfer_len, dev->status);
 #ifdef	OHCI_VERBOSE_DEBUG
 	if (!small) {
 		int i, len;
 
-		if (usb_pipecontrol(pipe)) {
-			printf(__FILE__ ": cmd(8):");
-			for (i = 0; i < 8; i++)
-				printf(" %02x", ((__u8 *) setup)[i]);
-			printf("\n");
+		if (usb_pipecontrol (pipe)) {
+			printf (__FILE__ ": cmd(8):");
+			for (i = 0; i < 8 ; i++)
+				printf (" %02x", ((__u8 *) setup) [i]);
+			printf ("\n");
 		}
 		if (transfer_len > 0 && buffer) {
-			printf(__FILE__ ": data(%d/%d):",
-			       purb->actual_length, transfer_len);
-			len = usb_pipeout(pipe) ?
-			    transfer_len : purb->actual_length;
+			printf (__FILE__ ": data(%d/%d):",
+				purb->actual_length,
+				transfer_len);
+			len = usb_pipeout (pipe)?
+					transfer_len: purb->actual_length;
 			for (i = 0; i < 16 && i < len; i++)
-				printf(" %02x", ((__u8 *) buffer)[i]);
-			printf("%s\n", i < len ? "..." : "");
+				printf (" %02x", ((__u8 *) buffer) [i]);
+			printf ("%s\n", i < len? "...": "");
 		}
 	}
 #endif
 }
 
 /* just for debugging; prints non-empty branches of the int ed tree inclusive iso eds*/
-void ep_print_int_eds(ohci_t * ohci, char *str)
-{
+void ep_print_int_eds (ohci_t *ohci, char * str) {
 	int i, j;
-	__u32 *ed_p;
-	for (i = 0; i < 32; i++) {
+	 __u32 * ed_p;
+	for (i= 0; i < 32; i++) {
 		j = 5;
-		ed_p = &(ohci->hcca->int_table[i]);
+		ed_p = &(ohci->hcca->int_table [i]);
 		if (*ed_p == 0)
-			continue;
-		printf(__FILE__ ": %s branch int %2d(%2x):", str, i, i);
+		    continue;
+		printf (__FILE__ ": %s branch int %2d(%2x):", str, i, i);
 		while (*ed_p != 0 && j--) {
-			ed_t *ed = (ed_t *) ohci_cpu_to_le32(ed_p);
-			printf(" ed: %4x;", ed->hwINFO);
+			ed_t *ed = (ed_t *)ohci_cpu_to_le32(ed_p);
+			printf (" ed: %4x;", ed->hwINFO);
 			ed_p = &ed->hwNextED;
 		}
-		printf("\n");
+		printf ("\n");
 	}
 }
 
-static void ohci_dump_intr_mask(char *label, __u32 mask)
+static void ohci_dump_intr_mask (char *label, __u32 mask)
 {
-	dbg("%s: 0x%08x%s%s%s%s%s%s%s%s%s",
-	    label,
-	    mask,
-	    (mask & OHCI_INTR_MIE) ? " MIE" : "",
-	    (mask & OHCI_INTR_OC) ? " OC" : "",
-	    (mask & OHCI_INTR_RHSC) ? " RHSC" : "",
-	    (mask & OHCI_INTR_FNO) ? " FNO" : "",
-	    (mask & OHCI_INTR_UE) ? " UE" : "",
-	    (mask & OHCI_INTR_RD) ? " RD" : "",
-	    (mask & OHCI_INTR_SF) ? " SF" : "",
-	    (mask & OHCI_INTR_WDH) ? " WDH" : "",
-	    (mask & OHCI_INTR_SO) ? " SO" : "");
+	dbg ("%s: 0x%08x%s%s%s%s%s%s%s%s%s",
+		label,
+		mask,
+		(mask & OHCI_INTR_MIE) ? " MIE" : "",
+		(mask & OHCI_INTR_OC) ? " OC" : "",
+		(mask & OHCI_INTR_RHSC) ? " RHSC" : "",
+		(mask & OHCI_INTR_FNO) ? " FNO" : "",
+		(mask & OHCI_INTR_UE) ? " UE" : "",
+		(mask & OHCI_INTR_RD) ? " RD" : "",
+		(mask & OHCI_INTR_SF) ? " SF" : "",
+		(mask & OHCI_INTR_WDH) ? " WDH" : "",
+		(mask & OHCI_INTR_SO) ? " SO" : ""
+		);
 }
 
-static void maybe_print_eds(char *label, __u32 value)
+static void maybe_print_eds (char *label, __u32 value)
 {
-	ed_t *edp = (ed_t *) value;
+	ed_t *edp = (ed_t *)value;
 
 	if (value) {
-		dbg("%s %08x", label, value);
-		dbg("%08x", edp->hwINFO);
-		dbg("%08x", edp->hwTailP);
-		dbg("%08x", edp->hwHeadP);
-		dbg("%08x", edp->hwNextED);
+		dbg ("%s %08x", label, value);
+		dbg ("%08x", edp->hwINFO);
+		dbg ("%08x", edp->hwTailP);
+		dbg ("%08x", edp->hwHeadP);
+		dbg ("%08x", edp->hwNextED);
 	}
 }
 
-static char *hcfs2string(int state)
+static char * hcfs2string (int state)
 {
 	switch (state) {
-	case OHCI_USB_RESET:
-		return "reset";
-	case OHCI_USB_RESUME:
-		return "resume";
-	case OHCI_USB_OPER:
-		return "operational";
-	case OHCI_USB_SUSPEND:
-		return "suspend";
+		case OHCI_USB_RESET:	return "reset";
+		case OHCI_USB_RESUME:	return "resume";
+		case OHCI_USB_OPER:	return "operational";
+		case OHCI_USB_SUSPEND:	return "suspend";
 	}
 	return "?";
 }
 
 /* dump control and status registers */
-static void ohci_dump_status(ohci_t * controller)
+static void ohci_dump_status (ohci_t *controller)
 {
-	struct ohci_regs *regs = controller->regs;
-	__u32 temp;
+	struct ohci_regs	*regs = controller->regs;
+	__u32			temp;
 
-	temp = readl(&regs->revision) & 0xff;
+	temp = readl (&regs->revision) & 0xff;
 	if (temp != 0x10)
-		dbg("spec %d.%d", (temp >> 4), (temp & 0x0f));
-
-	temp = readl(&regs->control);
-	dbg("control: 0x%08x%s%s%s HCFS=%s%s%s%s%s CBSR=%d", temp,
-	    (temp & OHCI_CTRL_RWE) ? " RWE" : "",
-	    (temp & OHCI_CTRL_RWC) ? " RWC" : "",
-	    (temp & OHCI_CTRL_IR) ? " IR" : "",
-	    hcfs2string(temp & OHCI_CTRL_HCFS),
-	    (temp & OHCI_CTRL_BLE) ? " BLE" : "",
-	    (temp & OHCI_CTRL_CLE) ? " CLE" : "",
-	    (temp & OHCI_CTRL_IE) ? " IE" : "",
-	    (temp & OHCI_CTRL_PLE) ? " PLE" : "", temp & OHCI_CTRL_CBSR);
-
-	temp = readl(&regs->cmdstatus);
-	dbg("cmdstatus: 0x%08x SOC=%d%s%s%s%s", temp,
-	    (temp & OHCI_SOC) >> 16,
-	    (temp & OHCI_OCR) ? " OCR" : "",
-	    (temp & OHCI_BLF) ? " BLF" : "",
-	    (temp & OHCI_CLF) ? " CLF" : "", (temp & OHCI_HCR) ? " HCR" : "");
-
-	ohci_dump_intr_mask("intrstatus", readl(&regs->intrstatus));
-	ohci_dump_intr_mask("intrenable", readl(&regs->intrenable));
-
-	maybe_print_eds("ed_periodcurrent", readl(&regs->ed_periodcurrent));
-
-	maybe_print_eds("ed_controlhead", readl(&regs->ed_controlhead));
-	maybe_print_eds("ed_controlcurrent", readl(&regs->ed_controlcurrent));
-
-	maybe_print_eds("ed_bulkhead", readl(&regs->ed_bulkhead));
-	maybe_print_eds("ed_bulkcurrent", readl(&regs->ed_bulkcurrent));
-
-	maybe_print_eds("donehead", readl(&regs->donehead));
+		dbg ("spec %d.%d", (temp >> 4), (temp & 0x0f));
+
+	temp = readl (&regs->control);
+	dbg ("control: 0x%08x%s%s%s HCFS=%s%s%s%s%s CBSR=%d", temp,
+		(temp & OHCI_CTRL_RWE) ? " RWE" : "",
+		(temp & OHCI_CTRL_RWC) ? " RWC" : "",
+		(temp & OHCI_CTRL_IR) ? " IR" : "",
+		hcfs2string (temp & OHCI_CTRL_HCFS),
+		(temp & OHCI_CTRL_BLE) ? " BLE" : "",
+		(temp & OHCI_CTRL_CLE) ? " CLE" : "",
+		(temp & OHCI_CTRL_IE) ? " IE" : "",
+		(temp & OHCI_CTRL_PLE) ? " PLE" : "",
+		temp & OHCI_CTRL_CBSR
+		);
+
+	temp = readl (&regs->cmdstatus);
+	dbg ("cmdstatus: 0x%08x SOC=%d%s%s%s%s", temp,
+		(temp & OHCI_SOC) >> 16,
+		(temp & OHCI_OCR) ? " OCR" : "",
+		(temp & OHCI_BLF) ? " BLF" : "",
+		(temp & OHCI_CLF) ? " CLF" : "",
+		(temp & OHCI_HCR) ? " HCR" : ""
+		);
+
+	ohci_dump_intr_mask ("intrstatus", readl (&regs->intrstatus));
+	ohci_dump_intr_mask ("intrenable", readl (&regs->intrenable));
+
+	maybe_print_eds ("ed_periodcurrent", readl (&regs->ed_periodcurrent));
+
+	maybe_print_eds ("ed_controlhead", readl (&regs->ed_controlhead));
+	maybe_print_eds ("ed_controlcurrent", readl (&regs->ed_controlcurrent));
+
+	maybe_print_eds ("ed_bulkhead", readl (&regs->ed_bulkhead));
+	maybe_print_eds ("ed_bulkcurrent", readl (&regs->ed_bulkcurrent));
+
+	maybe_print_eds ("donehead", readl (&regs->donehead));
 }
 
-static void ohci_dump_roothub(ohci_t * controller, int verbose)
+static void ohci_dump_roothub (ohci_t *controller, int verbose)
 {
-	__u32 temp, ndp, i;
+	__u32			temp, ndp, i;
 
-	temp = roothub_a(controller);
+	temp = roothub_a (controller);
 	ndp = (temp & RH_A_NDP);
 
 	if (verbose) {
-		dbg("roothub.a: %08x POTPGT=%d%s%s%s%s%s NDP=%d", temp,
-		    ((temp & RH_A_POTPGT) >> 24) & 0xff,
-		    (temp & RH_A_NOCP) ? " NOCP" : "",
-		    (temp & RH_A_OCPM) ? " OCPM" : "",
-		    (temp & RH_A_DT) ? " DT" : "",
-		    (temp & RH_A_NPS) ? " NPS" : "",
-		    (temp & RH_A_PSM) ? " PSM" : "", ndp);
-		temp = roothub_b(controller);
-		dbg("roothub.b: %08x PPCM=%04x DR=%04x",
-		    temp, (temp & RH_B_PPCM) >> 16, (temp & RH_B_DR)
-		    );
-		temp = roothub_status(controller);
-		dbg("roothub.status: %08x%s%s%s%s%s%s",
-		    temp,
-		    (temp & RH_HS_CRWE) ? " CRWE" : "",
-		    (temp & RH_HS_OCIC) ? " OCIC" : "",
-		    (temp & RH_HS_LPSC) ? " LPSC" : "",
-		    (temp & RH_HS_DRWE) ? " DRWE" : "",
-		    (temp & RH_HS_OCI) ? " OCI" : "",
-		    (temp & RH_HS_LPS) ? " LPS" : "");
+		dbg ("roothub.a: %08x POTPGT=%d%s%s%s%s%s NDP=%d", temp,
+			((temp & RH_A_POTPGT) >> 24) & 0xff,
+			(temp & RH_A_NOCP) ? " NOCP" : "",
+			(temp & RH_A_OCPM) ? " OCPM" : "",
+			(temp & RH_A_DT) ? " DT" : "",
+			(temp & RH_A_NPS) ? " NPS" : "",
+			(temp & RH_A_PSM) ? " PSM" : "",
+			ndp
+			);
+		temp = roothub_b (controller);
+		dbg ("roothub.b: %08x PPCM=%04x DR=%04x",
+			temp,
+			(temp & RH_B_PPCM) >> 16,
+			(temp & RH_B_DR)
+			);
+		temp = roothub_status (controller);
+		dbg ("roothub.status: %08x%s%s%s%s%s%s",
+			temp,
+			(temp & RH_HS_CRWE) ? " CRWE" : "",
+			(temp & RH_HS_OCIC) ? " OCIC" : "",
+			(temp & RH_HS_LPSC) ? " LPSC" : "",
+			(temp & RH_HS_DRWE) ? " DRWE" : "",
+			(temp & RH_HS_OCI) ? " OCI" : "",
+			(temp & RH_HS_LPS) ? " LPS" : ""
+			);
 	}
 
 	for (i = 0; i < ndp; i++) {
-		temp = roothub_portstatus(controller, i);
-		dbg("roothub.portstatus [%d] = 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s",
-		    i,
-		    temp,
-		    (temp & RH_PS_PRSC) ? " PRSC" : "",
-		    (temp & RH_PS_OCIC) ? " OCIC" : "",
-		    (temp & RH_PS_PSSC) ? " PSSC" : "",
-		    (temp & RH_PS_PESC) ? " PESC" : "",
-		    (temp & RH_PS_CSC) ? " CSC" : "",
-		    (temp & RH_PS_LSDA) ? " LSDA" : "",
-		    (temp & RH_PS_PPS) ? " PPS" : "",
-		    (temp & RH_PS_PRS) ? " PRS" : "",
-		    (temp & RH_PS_POCI) ? " POCI" : "",
-		    (temp & RH_PS_PSS) ? " PSS" : "",
-		    (temp & RH_PS_PES) ? " PES" : "",
-		    (temp & RH_PS_CCS) ? " CCS" : "");
+		temp = roothub_portstatus (controller, i);
+		dbg ("roothub.portstatus [%d] = 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s",
+			i,
+			temp,
+			(temp & RH_PS_PRSC) ? " PRSC" : "",
+			(temp & RH_PS_OCIC) ? " OCIC" : "",
+			(temp & RH_PS_PSSC) ? " PSSC" : "",
+			(temp & RH_PS_PESC) ? " PESC" : "",
+			(temp & RH_PS_CSC) ? " CSC" : "",
+
+			(temp & RH_PS_LSDA) ? " LSDA" : "",
+			(temp & RH_PS_PPS) ? " PPS" : "",
+			(temp & RH_PS_PRS) ? " PRS" : "",
+			(temp & RH_PS_POCI) ? " POCI" : "",
+			(temp & RH_PS_PSS) ? " PSS" : "",
+
+			(temp & RH_PS_PES) ? " PES" : "",
+			(temp & RH_PS_CCS) ? " CCS" : ""
+			);
 	}
 }
 
-static void ohci_dump(ohci_t * controller, int verbose)
+static void ohci_dump (ohci_t *controller, int verbose)
 {
-	dbg("OHCI controller usb-%s state", controller->slot_name);
+	dbg ("OHCI controller usb-%s state", controller->slot_name);
 
 	/* dumps some of the state we know about */
-	ohci_dump_status(controller);
+	ohci_dump_status (controller);
 	if (verbose)
-		ep_print_int_eds(controller, "hcca");
-	dbg("hcca frame #%04x", controller->hcca->frame_no);
-	ohci_dump_roothub(controller, 1);
+		ep_print_int_eds (controller, "hcca");
+	dbg ("hcca frame #%04x", controller->hcca->frame_no);
+	ohci_dump_roothub (controller, 1);
 }
 
-#endif				/* DEBUG */
+
+#endif /* DEBUG */
 
 /*-------------------------------------------------------------------------*
  * Interface functions (URB)
@@ -383,10 +388,10 @@ static void ohci_dump(ohci_t * controller, int verbose)
 /* get a transfer request */
 
 int sohci_submit_job(struct usb_device *dev, unsigned long pipe, void *buffer,
-		     int transfer_len, struct devrequest *setup, int interval)
+		int transfer_len, struct devrequest *setup, int interval)
 {
 	ohci_t *ohci;
-	ed_t *ed;
+	ed_t * ed;
 	urb_priv_t *purb_priv;
 	int i, size = 0;
 
@@ -399,20 +404,31 @@ int sohci_submit_job(struct usb_device *dev, unsigned long pipe, void *buffer,
 		return -1;
 	}
 
+	/* if we have an unfinished URB from previous transaction let's
+	 * fail and scream as quickly as possible so as not to corrupt
+	 * further communication */
+	if (!urb_finished) {
+		err("sohci_submit_job: URB NOT FINISHED");
+		return -1;
+	}
+	/* we're about to begin a new transaction here so mark the URB unfinished */
+	urb_finished = 0;
+
 	/* every endpoint has a ed, locate and fill it */
-	if (!(ed = ep_add_ed(dev, pipe))) {
+	if (!(ed = ep_add_ed (dev, pipe))) {
 		err("sohci_submit_job: ENOMEM");
 		return -1;
 	}
 
 	/* for the private part of the URB we need the number of TDs (size) */
-	switch (usb_pipetype(pipe)) {
-	case PIPE_BULK:	/* one TD for every 4096 Byte */
-		size = (transfer_len - 1) / 4096 + 1;
-		break;
-	case PIPE_CONTROL:	/* 1 TD for setup, 1 for ACK and 1 for every 4096 B */
-		size = (transfer_len == 0) ? 2 : (transfer_len - 1) / 4096 + 3;
-		break;
+	switch (usb_pipetype (pipe)) {
+		case PIPE_BULK: /* one TD for every 4096 Byte */
+			size = (transfer_len - 1) / 4096 + 1;
+			break;
+		case PIPE_CONTROL: /* 1 TD for setup, 1 for ACK and 1 for every 4096 B */
+			size = (transfer_len == 0)? 2:
+						(transfer_len - 1) / 4096 + 3;
+			break;
 	}
 
 	if (size >= (N_URB_TD - 1)) {
@@ -430,28 +446,27 @@ int sohci_submit_job(struct usb_device *dev, unsigned long pipe, void *buffer,
 	/* allocate the TDs */
 	/* note that td[0] was allocated in ep_add_ed */
 	for (i = 0; i < size; i++) {
-		purb_priv->td[i] = td_alloc(dev);
+		purb_priv->td[i] = td_alloc (dev);
 		if (!purb_priv->td[i]) {
 			purb_priv->length = i;
-			urb_free_priv(purb_priv);
+			urb_free_priv (purb_priv);
 			err("sohci_submit_job: ENOMEM");
 			return -1;
 		}
 	}
 
 	if (ed->state == ED_NEW || (ed->state & ED_DEL)) {
-		urb_free_priv(purb_priv);
+		urb_free_priv (purb_priv);
 		err("sohci_submit_job: EINVAL");
 		return -1;
 	}
 
 	/* link the ed into a chain if is not already */
 	if (ed->state != ED_OPER)
-		ep_link(ohci, ed);
+		ep_link (ohci, ed);
 
 	/* fill the TDs and link it to the ed */
-	td_submit_job(dev, pipe, buffer, transfer_len, setup, purb_priv,
-		      interval);
+	td_submit_job(dev, pipe, buffer, transfer_len, setup, purb_priv, interval);
 
 	return 0;
 }
@@ -461,11 +476,11 @@ int sohci_submit_job(struct usb_device *dev, unsigned long pipe, void *buffer,
 #ifdef DEBUG
 /* tell us the current USB frame number */
 
-static int sohci_get_current_frame_number(struct usb_device *usb_dev)
+static int sohci_get_current_frame_number (struct usb_device *usb_dev)
 {
 	ohci_t *ohci = &gohci;
 
-	return ohci_cpu_to_le16(ohci->hcca->frame_no);
+	return ohci_cpu_to_le16 (ohci->hcca->frame_no);
 }
 #endif
 
@@ -475,7 +490,7 @@ static int sohci_get_current_frame_number(struct usb_device *usb_dev)
 
 /* link an ed into one of the HC chains */
 
-static int ep_link(ohci_t * ohci, ed_t * edi)
+static int ep_link (ohci_t *ohci, ed_t *edi)
 {
 	volatile ed_t *ed = edi;
 
@@ -485,16 +500,15 @@ static int ep_link(ohci_t * ohci, ed_t * edi)
 	case PIPE_CONTROL:
 		ed->hwNextED = 0;
 		if (ohci->ed_controltail == NULL) {
-			writel(ed, &ohci->regs->ed_controlhead);
+			writel (ed, &ohci->regs->ed_controlhead);
 		} else {
-			ohci->ed_controltail->hwNextED =
-			    ohci_cpu_to_le32((unsigned long)ed);
+			ohci->ed_controltail->hwNextED = ohci_cpu_to_le32 ((unsigned long)ed);
 		}
 		ed->ed_prev = ohci->ed_controltail;
 		if (!ohci->ed_controltail && !ohci->ed_rm_list[0] &&
-		    !ohci->ed_rm_list[1] && !ohci->sleeping) {
+			!ohci->ed_rm_list[1] && !ohci->sleeping) {
 			ohci->hc_control |= OHCI_CTRL_CLE;
-			writel(ohci->hc_control, &ohci->regs->control);
+			writel (ohci->hc_control, &ohci->regs->control);
 		}
 		ohci->ed_controltail = edi;
 		break;
@@ -502,16 +516,15 @@ static int ep_link(ohci_t * ohci, ed_t * edi)
 	case PIPE_BULK:
 		ed->hwNextED = 0;
 		if (ohci->ed_bulktail == NULL) {
-			writel(ed, &ohci->regs->ed_bulkhead);
+			writel (ed, &ohci->regs->ed_bulkhead);
 		} else {
-			ohci->ed_bulktail->hwNextED =
-			    ohci_cpu_to_le32((unsigned long)ed);
+			ohci->ed_bulktail->hwNextED = ohci_cpu_to_le32 ((unsigned long)ed);
 		}
 		ed->ed_prev = ohci->ed_bulktail;
 		if (!ohci->ed_bulktail && !ohci->ed_rm_list[0] &&
-		    !ohci->ed_rm_list[1] && !ohci->sleeping) {
+			!ohci->ed_rm_list[1] && !ohci->sleeping) {
 			ohci->hc_control |= OHCI_CTRL_BLE;
-			writel(ohci->hc_control, &ohci->regs->control);
+			writel (ohci->hc_control, &ohci->regs->control);
 		}
 		ohci->ed_bulktail = edi;
 		break;
@@ -526,30 +539,27 @@ static int ep_link(ohci_t * ohci, ed_t * edi)
  * the link from the ed still points to another operational ed or 0
  * so the HC can eventually finish the processing of the unlinked ed */
 
-static int ep_unlink(ohci_t * ohci, ed_t * edi)
+static int ep_unlink (ohci_t *ohci, ed_t *edi)
 {
 	volatile ed_t *ed = edi;
 
-	ed->hwINFO |= ohci_cpu_to_le32(OHCI_ED_SKIP);
+	ed->hwINFO |= ohci_cpu_to_le32 (OHCI_ED_SKIP);
 
 	switch (ed->type) {
 	case PIPE_CONTROL:
 		if (ed->ed_prev == NULL) {
 			if (!ed->hwNextED) {
 				ohci->hc_control &= ~OHCI_CTRL_CLE;
-				writel(ohci->hc_control, &ohci->regs->control);
+				writel (ohci->hc_control, &ohci->regs->control);
 			}
-			writel(ohci_cpu_to_le32(*((__u32 *) & ed->hwNextED)),
-			       &ohci->regs->ed_controlhead);
+			writel (ohci_cpu_to_le32 (*((__u32 *)&ed->hwNextED)), &ohci->regs->ed_controlhead);
 		} else {
 			ed->ed_prev->hwNextED = ed->hwNextED;
 		}
 		if (ohci->ed_controltail == ed) {
 			ohci->ed_controltail = ed->ed_prev;
 		} else {
-			((ed_t *)
-			 ohci_cpu_to_le32(*((__u32 *) & ed->hwNextED)))->
-		   ed_prev = ed->ed_prev;
+			((ed_t *)ohci_cpu_to_le32 (*((__u32 *)&ed->hwNextED)))->ed_prev = ed->ed_prev;
 		}
 		break;
 
@@ -557,19 +567,16 @@ static int ep_unlink(ohci_t * ohci, ed_t * edi)
 		if (ed->ed_prev == NULL) {
 			if (!ed->hwNextED) {
 				ohci->hc_control &= ~OHCI_CTRL_BLE;
-				writel(ohci->hc_control, &ohci->regs->control);
+				writel (ohci->hc_control, &ohci->regs->control);
 			}
-			writel(ohci_cpu_to_le32(*((__u32 *) & ed->hwNextED)),
-			       &ohci->regs->ed_bulkhead);
+			writel (ohci_cpu_to_le32 (*((__u32 *)&ed->hwNextED)), &ohci->regs->ed_bulkhead);
 		} else {
 			ed->ed_prev->hwNextED = ed->hwNextED;
 		}
 		if (ohci->ed_bulktail == ed) {
 			ohci->ed_bulktail = ed->ed_prev;
 		} else {
-			((ed_t *)
-			 ohci_cpu_to_le32(*((__u32 *) & ed->hwNextED)))->
-		   ed_prev = ed->ed_prev;
+			((ed_t *)ohci_cpu_to_le32 (*((__u32 *)&ed->hwNextED)))->ed_prev = ed->ed_prev;
 		}
 		break;
 	}
@@ -577,6 +584,7 @@ static int ep_unlink(ohci_t * ohci, ed_t * edi)
 	return 0;
 }
 
+
 /*-------------------------------------------------------------------------*/
 
 /* add/reinit an endpoint; this should be done once at the usb_set_configuration command,
@@ -585,15 +593,14 @@ static int ep_unlink(ohci_t * ohci, ed_t * edi)
  * in all other cases the state is left unchanged
  * the ed info fields are setted anyway even though most of them should not change */
 
-static ed_t *ep_add_ed(struct usb_device *usb_dev, unsigned long pipe)
+static ed_t * ep_add_ed (struct usb_device *usb_dev, unsigned long pipe)
 {
 	td_t *td;
 	ed_t *ed_ret;
 	volatile ed_t *ed;
 
-	ed = ed_ret = &ohci_dev.ed[(usb_pipeendpoint(pipe) << 1) |
-				   (usb_pipecontrol(pipe) ? 0 :
-				    usb_pipeout(pipe))];
+	ed = ed_ret = &ohci_dev.ed[(usb_pipeendpoint (pipe) << 1) |
+			(usb_pipecontrol (pipe)? 0: usb_pipeout (pipe))];
 
 	if ((ed->state & ED_DEL) || (ed->state & ED_URB_DEL)) {
 		err("ep_add_ed: pending delete");
@@ -602,23 +609,22 @@ static ed_t *ep_add_ed(struct usb_device *usb_dev, unsigned long pipe)
 	}
 
 	if (ed->state == ED_NEW) {
-		ed->hwINFO = ohci_cpu_to_le32(OHCI_ED_SKIP);	/* skip ed */
+		ed->hwINFO = ohci_cpu_to_le32 (OHCI_ED_SKIP); /* skip ed */
 		/* dummy td; end of td list for ed */
-		td = td_alloc(usb_dev);
-		ed->hwTailP = ohci_cpu_to_le32((unsigned long)td);
+		td = td_alloc (usb_dev);
+		ed->hwTailP = ohci_cpu_to_le32 ((unsigned long)td);
 		ed->hwHeadP = ed->hwTailP;
 		ed->state = ED_UNLINK;
-		ed->type = usb_pipetype(pipe);
+		ed->type = usb_pipetype (pipe);
 		ohci_dev.ed_cnt++;
 	}
 
-	ed->hwINFO = ohci_cpu_to_le32(usb_pipedevice(pipe)
-				      | usb_pipeendpoint(pipe) << 7
-				      | (usb_pipeisoc(pipe) ? 0x8000 : 0)
-				      | (usb_pipecontrol(pipe) ? 0
-					 : (usb_pipeout(pipe) ? 0x800 : 0x1000))
-				      | usb_pipeslow(pipe) << 13 |
-				      usb_maxpacket(usb_dev, pipe) << 16);
+	ed->hwINFO = ohci_cpu_to_le32 (usb_pipedevice (pipe)
+			| usb_pipeendpoint (pipe) << 7
+			| (usb_pipeisoc (pipe)? 0x8000: 0)
+			| (usb_pipecontrol (pipe)? 0: (usb_pipeout (pipe)? 0x800: 0x1000))
+			| usb_pipeslow (pipe) << 13
+			| usb_maxpacket (usb_dev, pipe) << 16);
 
 	return ed_ret;
 }
@@ -629,11 +635,11 @@ static ed_t *ep_add_ed(struct usb_device *usb_dev, unsigned long pipe)
 
 /* enqueue next TD for this URB (OHCI spec 5.2.8.2) */
 
-static void td_fill(ohci_t * ohci, unsigned int info,
-		    void *data, int len,
-		    struct usb_device *dev, int index, urb_priv_t * urb_priv)
+static void td_fill (ohci_t *ohci, unsigned int info,
+	void *data, int len,
+	struct usb_device *dev, int index, urb_priv_t *urb_priv)
 {
-	volatile td_t *td, *td_pt;
+	volatile td_t  *td, *td_pt;
 #ifdef OHCI_FILL_TRACE
 	int i;
 #endif
@@ -643,37 +649,33 @@ static void td_fill(ohci_t * ohci, unsigned int info,
 		return;
 	}
 	/* use this td as the next dummy */
-	td_pt = urb_priv->td[index];
+	td_pt = urb_priv->td [index];
 	td_pt->hwNextTD = 0;
 
 	/* fill the old dummy TD */
-	td = urb_priv->td[index] =
-	    (td_t *) (ohci_cpu_to_le32(urb_priv->ed->hwTailP) & ~0xf);
+	td = urb_priv->td [index] = (td_t *)(ohci_cpu_to_le32 (urb_priv->ed->hwTailP) & ~0xf);
 
 	td->ed = urb_priv->ed;
 	td->next_dl_td = NULL;
 	td->index = index;
-	td->data = (__u32) data;
+	td->data = (__u32)data;
 #ifdef OHCI_FILL_TRACE
-	if ((usb_pipetype(urb_priv->pipe) == PIPE_BULK)
-	    && usb_pipeout(urb_priv->pipe)) {
+	if ((usb_pipetype(urb_priv->pipe) == PIPE_BULK) && usb_pipeout(urb_priv->pipe)) {
 		for (i = 0; i < len; i++)
-			printf("td->data[%d] %#2x ", i,
-			       ((unsigned char *)td->data)[i]);
+		printf("td->data[%d] %#2x ",i, ((unsigned char *)td->data)[i]);
 		printf("\n");
 	}
 #endif
 	if (!len)
 		data = 0;
 
-	td->hwINFO = ohci_cpu_to_le32(info);
-	td->hwCBP = ohci_cpu_to_le32((unsigned long)data);
+	td->hwINFO = ohci_cpu_to_le32 (info);
+	td->hwCBP = ohci_cpu_to_le32 ((unsigned long)data);
 	if (data)
-		td->hwBE = ohci_cpu_to_le32((unsigned long)(data + len - 1));
+		td->hwBE = ohci_cpu_to_le32 ((unsigned long)(data + len - 1));
 	else
 		td->hwBE = 0;
-	td->hwNextTD = ohci_cpu_to_le32((unsigned long)td_pt);
-	td->hwPSW[0] = ohci_cpu_to_le16(((__u32) data & 0x0FFF) | 0xE000);
+	td->hwNextTD = ohci_cpu_to_le32 ((unsigned long)td_pt);
 
 	/* append to queue */
 	td->ed->hwTailP = td->hwNextTD;
@@ -682,11 +684,8 @@ static void td_fill(ohci_t * ohci, unsigned int info,
 /*-------------------------------------------------------------------------*/
 
 /* prepare all TDs of a transfer */
-
-static void td_submit_job(struct usb_device *dev, unsigned long pipe,
-			  void *buffer, int transfer_len,
-			  struct devrequest *setup, urb_priv_t * urb,
-			  int interval)
+static void td_submit_job (struct usb_device *dev, unsigned long pipe, void *buffer,
+	int transfer_len, struct devrequest *setup, urb_priv_t *urb, int interval)
 {
 	ohci_t *ohci = &gohci;
 	int data_len = transfer_len;
@@ -696,12 +695,11 @@ static void td_submit_job(struct usb_device *dev, unsigned long pipe,
 	unsigned int toggle = 0;
 
 	/* OHCI handles the DATA-toggles itself, we just use the USB-toggle bits for reseting */
-	if (usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe))) {
+	if(usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe))) {
 		toggle = TD_T_TOGGLE;
 	} else {
 		toggle = TD_T_DATA0;
-		usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe),
-			      1);
+		usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 1);
 	}
 	urb->td_cnt = 0;
 	if (data_len)
@@ -709,42 +707,37 @@ static void td_submit_job(struct usb_device *dev, unsigned long pipe,
 	else
 		data = 0;
 
-	switch (usb_pipetype(pipe)) {
+	switch (usb_pipetype (pipe)) {
 	case PIPE_BULK:
-		info = usb_pipeout(pipe) ? TD_CC | TD_DP_OUT : TD_CC | TD_DP_IN;
-		while (data_len > 4096) {
-			td_fill(ohci, info | (cnt ? TD_T_TOGGLE : toggle), data,
-				4096, dev, cnt, urb);
-			data += 4096;
-			data_len -= 4096;
-			cnt++;
+		info = usb_pipeout (pipe)?
+			TD_CC | TD_DP_OUT : TD_CC | TD_DP_IN ;
+		while(data_len > 4096) {
+			td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), data, 4096, dev, cnt, urb);
+			data += 4096; data_len -= 4096; cnt++;
 		}
-		info = usb_pipeout(pipe) ?
-		    TD_CC | TD_DP_OUT : TD_CC | TD_R | TD_DP_IN;
-		td_fill(ohci, info | (cnt ? TD_T_TOGGLE : toggle), data,
-			data_len, dev, cnt, urb);
+		info = usb_pipeout (pipe)?
+			TD_CC | TD_DP_OUT : TD_CC | TD_R | TD_DP_IN ;
+		td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), data, data_len, dev, cnt, urb);
 		cnt++;
 
 		if (!ohci->sleeping)
-			writel(OHCI_BLF, &ohci->regs->cmdstatus);	/* start bulk list */
+			writel (OHCI_BLF, &ohci->regs->cmdstatus); /* start bulk list */
 		break;
 
 	case PIPE_CONTROL:
 		info = TD_CC | TD_DP_SETUP | TD_T_DATA0;
-		td_fill(ohci, info, setup, 8, dev, cnt++, urb);
+		td_fill (ohci, info, setup, 8, dev, cnt++, urb);
 		if (data_len > 0) {
-			info = usb_pipeout(pipe) ?
-			    TD_CC | TD_R | TD_DP_OUT | TD_T_DATA1 : TD_CC | TD_R
-			    | TD_DP_IN | TD_T_DATA1;
+			info = usb_pipeout (pipe)?
+				TD_CC | TD_R | TD_DP_OUT | TD_T_DATA1 : TD_CC | TD_R | TD_DP_IN | TD_T_DATA1;
 			/* NOTE:  mishandles transfers >8K, some >4K */
-			td_fill(ohci, info, data, data_len, dev, cnt++, urb);
+			td_fill (ohci, info, data, data_len, dev, cnt++, urb);
 		}
-		info = usb_pipeout(pipe) ?
-		    TD_CC | TD_DP_IN | TD_T_DATA1 : TD_CC | TD_DP_OUT |
-		    TD_T_DATA1;
-		td_fill(ohci, info, data, 0, dev, cnt++, urb);
+		info = usb_pipeout (pipe)?
+			TD_CC | TD_DP_IN | TD_T_DATA1: TD_CC | TD_DP_OUT | TD_T_DATA1;
+		td_fill (ohci, info, data, 0, dev, cnt++, urb);
 		if (!ohci->sleeping)
-			writel(OHCI_CLF, &ohci->regs->cmdstatus);	/* start Control list */
+			writel (OHCI_CLF, &ohci->regs->cmdstatus); /* start Control list */
 		break;
 	}
 	if (urb->length != cnt)
@@ -755,6 +748,7 @@ static void td_submit_job(struct usb_device *dev, unsigned long pipe,
  * Done List handling functions
  *-------------------------------------------------------------------------*/
 
+
 /* calculate the transfer length and update the urb */
 
 static void dl_transfer_length(td_t * td)
@@ -762,12 +756,13 @@ static void dl_transfer_length(td_t * td)
 	__u32 tdINFO, tdBE, tdCBP;
 	urb_priv_t *lurb_priv = &urb_priv;
 
-	tdINFO = ohci_cpu_to_le32(td->hwINFO);
-	tdBE = ohci_cpu_to_le32(td->hwBE);
-	tdCBP = ohci_cpu_to_le32(td->hwCBP);
+	tdINFO = ohci_cpu_to_le32 (td->hwINFO);
+	tdBE   = ohci_cpu_to_le32 (td->hwBE);
+	tdCBP  = ohci_cpu_to_le32 (td->hwCBP);
 
-	if (!(usb_pipetype(lurb_priv->pipe) == PIPE_CONTROL &&
-	      ((td->index == 0) || (td->index == lurb_priv->length - 1)))) {
+
+	if (!(usb_pipetype (lurb_priv->pipe) == PIPE_CONTROL &&
+	    ((td->index == 0) || (td->index == lurb_priv->length - 1)))) {
 		if (tdBE != 0) {
 			if (td->hwCBP == 0)
 				lurb_priv->actual_length += tdBE - td->data + 1;
@@ -782,42 +777,31 @@ static void dl_transfer_length(td_t * td)
 /* replies to the request have to be on a FIFO basis so
  * we reverse the reversed done-list */
 
-static td_t *dl_reverse_done_list(ohci_t * ohci)
+static td_t * dl_reverse_done_list (ohci_t *ohci)
 {
 	__u32 td_list_hc;
 	td_t *td_rev = NULL;
 	td_t *td_list = NULL;
 	urb_priv_t *lurb_priv = NULL;
 
-	td_list_hc = ohci_cpu_to_le32(ohci->hcca->done_head) & 0xfffffff0;
+	td_list_hc = ohci_cpu_to_le32 (ohci->hcca->done_head) & 0xfffffff0;
 	ohci->hcca->done_head = 0;
 
 	while (td_list_hc) {
-		td_list = (td_t *) td_list_hc;
+		td_list = (td_t *)td_list_hc;
 
-		if (TD_CC_GET(ohci_cpu_to_le32(td_list->hwINFO))) {
+		if (TD_CC_GET (ohci_cpu_to_le32 (td_list->hwINFO))) {
 			lurb_priv = &urb_priv;
 			dbg(" USB-error/status: %x : %p",
-			    TD_CC_GET(ohci_cpu_to_le32(td_list->hwINFO)),
-			    td_list);
-			if (td_list->ed->hwHeadP & ohci_cpu_to_le32(0x1)) {
-				if (lurb_priv
-				    && ((td_list->index + 1) <
-					lurb_priv->length)) {
+					TD_CC_GET (ohci_cpu_to_le32 (td_list->hwINFO)), td_list);
+			if (td_list->ed->hwHeadP & ohci_cpu_to_le32 (0x1)) {
+				if (lurb_priv && ((td_list->index + 1) < lurb_priv->length)) {
 					td_list->ed->hwHeadP =
-					    (lurb_priv->
-					     td[lurb_priv->length -
-						1]->
-					     hwNextTD &
-					     ohci_cpu_to_le32(0xfffffff0)) |
-					    (td_list->ed->
-					     hwHeadP & ohci_cpu_to_le32(0x2));
-					lurb_priv->td_cnt +=
-					    lurb_priv->length - td_list->index -
-					    1;
+						(lurb_priv->td[lurb_priv->length - 1]->hwNextTD & ohci_cpu_to_le32 (0xfffffff0)) |
+									(td_list->ed->hwHeadP & ohci_cpu_to_le32 (0x2));
+					lurb_priv->td_cnt += lurb_priv->length - td_list->index - 1;
 				} else
-					td_list->ed->hwHeadP &=
-					    ohci_cpu_to_le32(0xfffffff2);
+					td_list->ed->hwHeadP &= ohci_cpu_to_le32 (0xfffffff2);
 			}
 #ifdef CONFIG_MPC5200
 			td_list->hwNextTD = 0;
@@ -826,7 +810,7 @@ static td_t *dl_reverse_done_list(ohci_t * ohci)
 
 		td_list->next_dl_td = td_rev;
 		td_rev = td_list;
-		td_list_hc = ohci_cpu_to_le32(td_list->hwNextTD) & 0xfffffff0;
+		td_list_hc = ohci_cpu_to_le32 (td_list->hwNextTD) & 0xfffffff0;
 	}
 	return td_list;
 }
@@ -834,12 +818,12 @@ static td_t *dl_reverse_done_list(ohci_t * ohci)
 /*-------------------------------------------------------------------------*/
 
 /* td done list */
-static int dl_done_list(ohci_t * ohci, td_t * td_list)
+static int dl_done_list (ohci_t *ohci, td_t *td_list)
 {
 	td_t *td_list_next = NULL;
 	ed_t *ed;
 	int cc = 0;
-	int stat = 0xff;
+	int stat = 0;
 	/* urb_t *urb; */
 	urb_priv_t *lurb_priv;
 	__u32 tdINFO, edHeadP, edTailP;
@@ -848,29 +832,30 @@ static int dl_done_list(ohci_t * ohci, td_t * td_list)
 		td_list_next = td_list->next_dl_td;
 
 		lurb_priv = &urb_priv;
-		tdINFO = ohci_cpu_to_le32(td_list->hwINFO);
+		tdINFO = ohci_cpu_to_le32 (td_list->hwINFO);
 
 		ed = td_list->ed;
 
 		dl_transfer_length(td_list);
 
 		/* error code of transfer */
-		cc = TD_CC_GET(tdINFO);
+		cc = TD_CC_GET (tdINFO);
 		if (++(lurb_priv->td_cnt) == lurb_priv->length) {
 			if ((ed->state & (ED_OPER | ED_UNLINK))
-			    && (lurb_priv->state != URB_DEL)) {
+					&& (lurb_priv->state != URB_DEL)) {
 				dbg("ConditionCode %#x", cc);
 				stat = cc_to_error[cc];
+				urb_finished = 1;
 			}
 		}
 
 		if (ed->state != ED_NEW) {
-			edHeadP = ohci_cpu_to_le32(ed->hwHeadP) & 0xfffffff0;
-			edTailP = ohci_cpu_to_le32(ed->hwTailP);
+			edHeadP = ohci_cpu_to_le32 (ed->hwHeadP) & 0xfffffff0;
+			edTailP = ohci_cpu_to_le32 (ed->hwTailP);
 
 			/* unlink eds if they are not busy */
 			if ((edHeadP == edTailP) && (ed->state == ED_OPER))
-				ep_unlink(ohci, ed);
+				ep_unlink (ohci, ed);
 		}
 
 		td_list = td_list_next;
@@ -883,101 +868,107 @@ static int dl_done_list(ohci_t * ohci, td_t * td_list)
  *-------------------------------------------------------------------------*/
 
 /* Device descriptor */
-static __u8 root_hub_dev_des[] = {
-	0x12,			/*  __u8  bLength; */
-	0x01,			/*  __u8  bDescriptorType; Device */
-	0x10,			/*  __u16 bcdUSB; v1.1 */
+static __u8 root_hub_dev_des[] =
+{
+	0x12,	    /*	__u8  bLength; */
+	0x01,	    /*	__u8  bDescriptorType; Device */
+	0x10,	    /*	__u16 bcdUSB; v1.1 */
 	0x01,
-	0x09,			/*  __u8  bDeviceClass; HUB_CLASSCODE */
-	0x00,			/*  __u8  bDeviceSubClass; */
-	0x00,			/*  __u8  bDeviceProtocol; */
-	0x08,			/*  __u8  bMaxPacketSize0; 8 Bytes */
-	0x00,			/*  __u16 idVendor; */
+	0x09,	    /*	__u8  bDeviceClass; HUB_CLASSCODE */
+	0x00,	    /*	__u8  bDeviceSubClass; */
+	0x00,	    /*	__u8  bDeviceProtocol; */
+	0x08,	    /*	__u8  bMaxPacketSize0; 8 Bytes */
+	0x00,	    /*	__u16 idVendor; */
 	0x00,
-	0x00,			/*  __u16 idProduct; */
+	0x00,	    /*	__u16 idProduct; */
 	0x00,
-	0x00,			/*  __u16 bcdDevice; */
+	0x00,	    /*	__u16 bcdDevice; */
 	0x00,
-	0x00,			/*  __u8  iManufacturer; */
-	0x01,			/*  __u8  iProduct; */
-	0x00,			/*  __u8  iSerialNumber; */
-	0x01			/*  __u8  bNumConfigurations; */
+	0x00,	    /*	__u8  iManufacturer; */
+	0x01,	    /*	__u8  iProduct; */
+	0x00,	    /*	__u8  iSerialNumber; */
+	0x01	    /*	__u8  bNumConfigurations; */
 };
 
+
 /* Configuration descriptor */
-static __u8 root_hub_config_des[] = {
-	0x09,			/*  __u8  bLength; */
-	0x02,			/*  __u8  bDescriptorType; Configuration */
-	0x19,			/*  __u16 wTotalLength; */
+static __u8 root_hub_config_des[] =
+{
+	0x09,	    /*	__u8  bLength; */
+	0x02,	    /*	__u8  bDescriptorType; Configuration */
+	0x19,	    /*	__u16 wTotalLength; */
 	0x00,
-	0x01,			/*  __u8  bNumInterfaces; */
-	0x01,			/*  __u8  bConfigurationValue; */
-	0x00,			/*  __u8  iConfiguration; */
-	0x40,			/*  __u8  bmAttributes;
-				   Bit 7: Bus-powered, 6: Self-powered, 5 Remote-wakwup, 4..0: resvd */
-	0x00,			/*  __u8  MaxPower; */
+	0x01,	    /*	__u8  bNumInterfaces; */
+	0x01,	    /*	__u8  bConfigurationValue; */
+	0x00,	    /*	__u8  iConfiguration; */
+	0x40,	    /*	__u8  bmAttributes;
+		 Bit 7: Bus-powered, 6: Self-powered, 5 Remote-wakwup, 4..0: resvd */
+	0x00,	    /*	__u8  MaxPower; */
 
 	/* interface */
-	0x09,			/*  __u8  if_bLength; */
-	0x04,			/*  __u8  if_bDescriptorType; Interface */
-	0x00,			/*  __u8  if_bInterfaceNumber; */
-	0x00,			/*  __u8  if_bAlternateSetting; */
-	0x01,			/*  __u8  if_bNumEndpoints; */
-	0x09,			/*  __u8  if_bInterfaceClass; HUB_CLASSCODE */
-	0x00,			/*  __u8  if_bInterfaceSubClass; */
-	0x00,			/*  __u8  if_bInterfaceProtocol; */
-	0x00,			/*  __u8  if_iInterface; */
+	0x09,	    /*	__u8  if_bLength; */
+	0x04,	    /*	__u8  if_bDescriptorType; Interface */
+	0x00,	    /*	__u8  if_bInterfaceNumber; */
+	0x00,	    /*	__u8  if_bAlternateSetting; */
+	0x01,	    /*	__u8  if_bNumEndpoints; */
+	0x09,	    /*	__u8  if_bInterfaceClass; HUB_CLASSCODE */
+	0x00,	    /*	__u8  if_bInterfaceSubClass; */
+	0x00,	    /*	__u8  if_bInterfaceProtocol; */
+	0x00,	    /*	__u8  if_iInterface; */
 
 	/* endpoint */
-	0x07,			/*  __u8  ep_bLength; */
-	0x05,			/*  __u8  ep_bDescriptorType; Endpoint */
-	0x81,			/*  __u8  ep_bEndpointAddress; IN Endpoint 1 */
-	0x03,			/*  __u8  ep_bmAttributes; Interrupt */
-	0x02,			/*  __u16 ep_wMaxPacketSize; ((MAX_ROOT_PORTS + 1) / 8 */
+	0x07,	    /*	__u8  ep_bLength; */
+	0x05,	    /*	__u8  ep_bDescriptorType; Endpoint */
+	0x81,	    /*	__u8  ep_bEndpointAddress; IN Endpoint 1 */
+	0x03,	    /*	__u8  ep_bmAttributes; Interrupt */
+	0x02,	    /*	__u16 ep_wMaxPacketSize; ((MAX_ROOT_PORTS + 1) / 8 */
 	0x00,
-	0xff			/*  __u8  ep_bInterval; 255 ms */
+	0xff	    /*	__u8  ep_bInterval; 255 ms */
 };
 
-static unsigned char root_hub_str_index0[] = {
+static unsigned char root_hub_str_index0[] =
+{
 	0x04,			/*  __u8  bLength; */
 	0x03,			/*  __u8  bDescriptorType; String-descriptor */
 	0x09,			/*  __u8  lang ID */
 	0x04,			/*  __u8  lang ID */
 };
 
-static unsigned char root_hub_str_index1[] = {
+static unsigned char root_hub_str_index1[] =
+{
 	28,			/*  __u8  bLength; */
 	0x03,			/*  __u8  bDescriptorType; String-descriptor */
 	'O',			/*  __u8  Unicode */
-	0,			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
 	'H',			/*  __u8  Unicode */
-	0,			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
 	'C',			/*  __u8  Unicode */
-	0,			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
 	'I',			/*  __u8  Unicode */
-	0,			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
 	' ',			/*  __u8  Unicode */
-	0,			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
 	'R',			/*  __u8  Unicode */
-	0,			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
 	'o',			/*  __u8  Unicode */
-	0,			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
 	'o',			/*  __u8  Unicode */
-	0,			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
 	't',			/*  __u8  Unicode */
-	0,			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
 	' ',			/*  __u8  Unicode */
-	0,			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
 	'H',			/*  __u8  Unicode */
-	0,			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
 	'u',			/*  __u8  Unicode */
-	0,			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
 	'b',			/*  __u8  Unicode */
-	0,			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
 };
 
 /* Hub class-specific descriptor is constructed dynamically */
 
+
 /*-------------------------------------------------------------------------*/
 
 #define OK(x)			len = (x); break
@@ -993,19 +984,20 @@ static unsigned char root_hub_str_index1[] = {
 
 /* request to virtual root hub */
 
-int rh_check_port_status(ohci_t * controller)
+int rh_check_port_status(ohci_t *controller)
 {
 	__u32 temp, ndp, i;
 	int res;
 
 	res = -1;
-	temp = roothub_a(controller);
+	temp = roothub_a (controller);
 	ndp = (temp & RH_A_NDP);
 	for (i = 0; i < ndp; i++) {
-		temp = roothub_portstatus(controller, i);
+		temp = roothub_portstatus (controller, i);
 		/* check for a device disconnect */
 		if (((temp & (RH_PS_PESC | RH_PS_CSC)) ==
-		     (RH_PS_PESC | RH_PS_CSC)) && ((temp & RH_PS_CCS) == 0)) {
+			(RH_PS_PESC | RH_PS_CSC)) &&
+			((temp & RH_PS_CCS) == 0)) {
 			res = i;
 			break;
 		}
@@ -1014,235 +1006,209 @@ int rh_check_port_status(ohci_t * controller)
 }
 
 static int ohci_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
-			      void *buffer, int transfer_len,
-			      struct devrequest *cmd)
+		void *buffer, int transfer_len, struct devrequest *cmd)
 {
-	void *data = buffer;
+	void * data = buffer;
 	int leni = transfer_len;
 	int len = 0;
 	int stat = 0;
 	__u32 datab[4];
-	__u8 *data_buf = (__u8 *) datab;
+	__u8 *data_buf = (__u8 *)datab;
 	__u16 bmRType_bReq;
 	__u16 wValue;
 	__u16 wIndex;
 	__u16 wLength;
 
 #ifdef DEBUG
-	urb_priv.actual_length = 0;
-	pkt_print(dev, pipe, buffer, transfer_len, cmd, "SUB(rh)",
-		  usb_pipein(pipe));
+urb_priv.actual_length = 0;
+pkt_print(dev, pipe, buffer, transfer_len, cmd, "SUB(rh)", usb_pipein(pipe));
 #endif
 	if ((pipe & PIPE_INTERRUPT) == PIPE_INTERRUPT) {
 		info("Root-Hub submit IRQ: NOT implemented");
 		return 0;
 	}
 
-	bmRType_bReq = cmd->requesttype | (cmd->request << 8);
-	wValue = m16_swap(cmd->value);
-	wIndex = m16_swap(cmd->index);
-	wLength = m16_swap(cmd->length);
+	bmRType_bReq  = cmd->requesttype | (cmd->request << 8);
+	wValue	      = m16_swap (cmd->value);
+	wIndex	      = m16_swap (cmd->index);
+	wLength	      = m16_swap (cmd->length);
 
 	info("Root-Hub: adr: %2x cmd(%1x): %08x %04x %04x %04x",
-	     dev->devnum, 8, bmRType_bReq, wValue, wIndex, wLength);
+		dev->devnum, 8, bmRType_bReq, wValue, wIndex, wLength);
 
 	switch (bmRType_bReq) {
-		/* Request Destination:
-		   without flags: Device,
-		   RH_INTERFACE: interface,
-		   RH_ENDPOINT: endpoint,
-		   RH_CLASS means HUB here,
-		   RH_OTHER | RH_CLASS  almost ever means HUB_PORT here
-		 */
+	/* Request Destination:
+	   without flags: Device,
+	   RH_INTERFACE: interface,
+	   RH_ENDPOINT: endpoint,
+	   RH_CLASS means HUB here,
+	   RH_OTHER | RH_CLASS	almost ever means HUB_PORT here
+	*/
 
 	case RH_GET_STATUS:
-		*(__u16 *) data_buf = m16_swap(1);
-		OK(2);
+			*(__u16 *) data_buf = m16_swap (1); OK (2);
 	case RH_GET_STATUS | RH_INTERFACE:
-		*(__u16 *) data_buf = m16_swap(0);
-		OK(2);
+			*(__u16 *) data_buf = m16_swap (0); OK (2);
 	case RH_GET_STATUS | RH_ENDPOINT:
-		*(__u16 *) data_buf = m16_swap(0);
-		OK(2);
+			*(__u16 *) data_buf = m16_swap (0); OK (2);
 	case RH_GET_STATUS | RH_CLASS:
-		*(__u32 *) data_buf =
-		    m32_swap(RD_RH_STAT & ~(RH_HS_CRWE | RH_HS_DRWE));
-		OK(4);
+			*(__u32 *) data_buf = m32_swap (
+				RD_RH_STAT & ~(RH_HS_CRWE | RH_HS_DRWE));
+			OK (4);
 	case RH_GET_STATUS | RH_OTHER | RH_CLASS:
-		*(__u32 *) data_buf = m32_swap(RD_RH_PORTSTAT);
-		OK(4);
+			*(__u32 *) data_buf = m32_swap (RD_RH_PORTSTAT); OK (4);
 
 	case RH_CLEAR_FEATURE | RH_ENDPOINT:
 		switch (wValue) {
-		case (RH_ENDPOINT_STALL):
-			OK(0);
+			case (RH_ENDPOINT_STALL): OK (0);
 		}
 		break;
 
 	case RH_CLEAR_FEATURE | RH_CLASS:
 		switch (wValue) {
-		case RH_C_HUB_LOCAL_POWER:
-			OK(0);
-		case (RH_C_HUB_OVER_CURRENT):
-			WR_RH_STAT(RH_HS_OCIC);
-			OK(0);
+			case RH_C_HUB_LOCAL_POWER:
+				OK(0);
+			case (RH_C_HUB_OVER_CURRENT):
+					WR_RH_STAT(RH_HS_OCIC); OK (0);
 		}
 		break;
 
 	case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
 		switch (wValue) {
-		case (RH_PORT_ENABLE):
-			WR_RH_PORTSTAT(RH_PS_CCS);
-			OK(0);
-		case (RH_PORT_SUSPEND):
-			WR_RH_PORTSTAT(RH_PS_POCI);
-			OK(0);
-		case (RH_PORT_POWER):
-			WR_RH_PORTSTAT(RH_PS_LSDA);
-			OK(0);
-		case (RH_C_PORT_CONNECTION):
-			WR_RH_PORTSTAT(RH_PS_CSC);
-			OK(0);
-		case (RH_C_PORT_ENABLE):
-			WR_RH_PORTSTAT(RH_PS_PESC);
-			OK(0);
-		case (RH_C_PORT_SUSPEND):
-			WR_RH_PORTSTAT(RH_PS_PSSC);
-			OK(0);
-		case (RH_C_PORT_OVER_CURRENT):
-			WR_RH_PORTSTAT(RH_PS_OCIC);
-			OK(0);
-		case (RH_C_PORT_RESET):
-			WR_RH_PORTSTAT(RH_PS_PRSC);
-			OK(0);
+			case (RH_PORT_ENABLE):
+					WR_RH_PORTSTAT (RH_PS_CCS ); OK (0);
+			case (RH_PORT_SUSPEND):
+					WR_RH_PORTSTAT (RH_PS_POCI); OK (0);
+			case (RH_PORT_POWER):
+					WR_RH_PORTSTAT (RH_PS_LSDA); OK (0);
+			case (RH_C_PORT_CONNECTION):
+					WR_RH_PORTSTAT (RH_PS_CSC ); OK (0);
+			case (RH_C_PORT_ENABLE):
+					WR_RH_PORTSTAT (RH_PS_PESC); OK (0);
+			case (RH_C_PORT_SUSPEND):
+					WR_RH_PORTSTAT (RH_PS_PSSC); OK (0);
+			case (RH_C_PORT_OVER_CURRENT):
+					WR_RH_PORTSTAT (RH_PS_OCIC); OK (0);
+			case (RH_C_PORT_RESET):
+					WR_RH_PORTSTAT (RH_PS_PRSC); OK (0);
 		}
 		break;
 
 	case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
 		switch (wValue) {
-		case (RH_PORT_SUSPEND):
-			WR_RH_PORTSTAT(RH_PS_PSS);
-			OK(0);
-		case (RH_PORT_RESET):	/* BUG IN HUP CODE ******** */
-			if (RD_RH_PORTSTAT & RH_PS_CCS)
-				WR_RH_PORTSTAT(RH_PS_PRS);
-			OK(0);
-		case (RH_PORT_POWER):
-			WR_RH_PORTSTAT(RH_PS_PPS);
-			OK(0);
-		case (RH_PORT_ENABLE):	/* BUG IN HUP CODE ******** */
-			if (RD_RH_PORTSTAT & RH_PS_CCS)
-				WR_RH_PORTSTAT(RH_PS_PES);
-			OK(0);
+			case (RH_PORT_SUSPEND):
+					WR_RH_PORTSTAT (RH_PS_PSS ); OK (0);
+			case (RH_PORT_RESET): /* BUG IN HUP CODE *********/
+					if (RD_RH_PORTSTAT & RH_PS_CCS)
+					    WR_RH_PORTSTAT (RH_PS_PRS);
+					OK (0);
+			case (RH_PORT_POWER):
+					WR_RH_PORTSTAT (RH_PS_PPS ); OK (0);
+			case (RH_PORT_ENABLE): /* BUG IN HUP CODE *********/
+					if (RD_RH_PORTSTAT & RH_PS_CCS)
+					    WR_RH_PORTSTAT (RH_PS_PES );
+					OK (0);
 		}
 		break;
 
-	case RH_SET_ADDRESS:
-		gohci.rh.devnum = wValue;
-		OK(0);
+	case RH_SET_ADDRESS: gohci.rh.devnum = wValue; OK(0);
 
 	case RH_GET_DESCRIPTOR:
 		switch ((wValue & 0xff00) >> 8) {
-		case (0x01):	/* device descriptor */
-			len = min_t(unsigned int,
-				    leni,
-				    min_t(unsigned int,
-					  sizeof(root_hub_dev_des), wLength));
-			data_buf = root_hub_dev_des;
-			OK(len);
-		case (0x02):	/* configuration descriptor */
-			len = min_t(unsigned int,
-				    leni,
-				    min_t(unsigned int,
-					  sizeof(root_hub_config_des),
-					  wLength));
-			data_buf = root_hub_config_des;
-			OK(len);
-		case (0x03):	/* string descriptors */
-			if (wValue == 0x0300) {
+			case (0x01): /* device descriptor */
 				len = min_t(unsigned int,
-					    leni,
-					    min_t(unsigned int,
-						  sizeof(root_hub_str_index0),
-						  wLength));
-				data_buf = root_hub_str_index0;
-				OK(len);
-			}
-			if (wValue == 0x0301) {
+					  leni,
+					  min_t(unsigned int,
+					      sizeof (root_hub_dev_des),
+					      wLength));
+				data_buf = root_hub_dev_des; OK(len);
+			case (0x02): /* configuration descriptor */
 				len = min_t(unsigned int,
-					    leni,
-					    min_t(unsigned int,
-						  sizeof(root_hub_str_index1),
-						  wLength));
-				data_buf = root_hub_str_index1;
-				OK(len);
+					  leni,
+					  min_t(unsigned int,
+					      sizeof (root_hub_config_des),
+					      wLength));
+				data_buf = root_hub_config_des; OK(len);
+			case (0x03): /* string descriptors */
+				if(wValue==0x0300) {
+					len = min_t(unsigned int,
+						  leni,
+						  min_t(unsigned int,
+						      sizeof (root_hub_str_index0),
+						      wLength));
+					data_buf = root_hub_str_index0;
+					OK(len);
+				}
+				if(wValue==0x0301) {
+					len = min_t(unsigned int,
+						  leni,
+						  min_t(unsigned int,
+						      sizeof (root_hub_str_index1),
+						      wLength));
+					data_buf = root_hub_str_index1;
+					OK(len);
 			}
-		default:
-			stat = USB_ST_STALLED;
+			default:
+				stat = USB_ST_STALLED;
 		}
 		break;
 
 	case RH_GET_DESCRIPTOR | RH_CLASS:
-		{
-			__u32 temp = roothub_a(&gohci);
-
-			data_buf[0] = 9;	/* min length; */
-			data_buf[1] = 0x29;
-			data_buf[2] = temp & RH_A_NDP;
-			data_buf[3] = 0;
-			if (temp & RH_A_PSM)	/* per-port power switching? */
-				data_buf[3] |= 0x1;
-			if (temp & RH_A_NOCP)	/* no overcurrent reporting? */
-				data_buf[3] |= 0x10;
-			else if (temp & RH_A_OCPM)	/* per-port overcurrent reporting? */
-				data_buf[3] |= 0x8;
-
-			/* corresponds to data_buf[4-7] */
-			datab[1] = 0;
-			data_buf[5] = (temp & RH_A_POTPGT) >> 24;
-			temp = roothub_b(&gohci);
-			data_buf[7] = temp & RH_B_DR;
-			if (data_buf[2] < 7) {
-				data_buf[8] = 0xff;
-			} else {
-				data_buf[0] += 2;
-				data_buf[8] = (temp & RH_B_DR) >> 8;
-				data_buf[10] = data_buf[9] = 0xff;
-			}
-
-			len = min_t(unsigned int, leni,
-				    min_t(unsigned int, data_buf[0], wLength));
-			OK(len);
+	    {
+		    __u32 temp = roothub_a (&gohci);
+
+		    data_buf [0] = 9;		/* min length; */
+		    data_buf [1] = 0x29;
+		    data_buf [2] = temp & RH_A_NDP;
+		    data_buf [3] = 0;
+		    if (temp & RH_A_PSM)	/* per-port power switching? */
+			data_buf [3] |= 0x1;
+		    if (temp & RH_A_NOCP)	/* no overcurrent reporting? */
+			data_buf [3] |= 0x10;
+		    else if (temp & RH_A_OCPM)	/* per-port overcurrent reporting? */
+			data_buf [3] |= 0x8;
+
+		    /* corresponds to data_buf[4-7] */
+		    datab [1] = 0;
+		    data_buf [5] = (temp & RH_A_POTPGT) >> 24;
+		    temp = roothub_b (&gohci);
+		    data_buf [7] = temp & RH_B_DR;
+		    if (data_buf [2] < 7) {
+			data_buf [8] = 0xff;
+		    } else {
+			data_buf [0] += 2;
+			data_buf [8] = (temp & RH_B_DR) >> 8;
+			data_buf [10] = data_buf [9] = 0xff;
+		    }
+
+		    len = min_t(unsigned int, leni,
+			      min_t(unsigned int, data_buf [0], wLength));
+		    OK (len);
 		}
 
-	case RH_GET_CONFIGURATION:
-		*(__u8 *) data_buf = 0x01;
-		OK(1);
+	case RH_GET_CONFIGURATION:	*(__u8 *) data_buf = 0x01; OK (1);
 
-	case RH_SET_CONFIGURATION:
-		WR_RH_STAT(0x10000);
-		OK(0);
+	case RH_SET_CONFIGURATION:	WR_RH_STAT (0x10000); OK (0);
 
 	default:
-		dbg("unsupported root hub command");
+		dbg ("unsupported root hub command");
 		stat = USB_ST_STALLED;
 	}
 
 #ifdef	DEBUG
-	ohci_dump_roothub(&gohci, 1);
+	ohci_dump_roothub (&gohci, 1);
 #endif
 
 	len = min_t(int, len, leni);
 	if (data != data_buf)
-		memcpy(data, data_buf, len);
+	    memcpy (data, data_buf, len);
 	dev->act_len = len;
 	dev->status = stat;
 
 #ifdef DEBUG
 	if (transfer_len)
 		urb_priv.actual_length = transfer_len;
-	pkt_print(dev, pipe, buffer, transfer_len, cmd, "RET(rh)",
-		  0 /*usb_pipein(pipe) */ );
+	pkt_print(dev, pipe, buffer, transfer_len, cmd, "RET(rh)", 0/*usb_pipein(pipe)*/);
 #endif
 
 	return stat;
@@ -1253,7 +1219,7 @@ static int ohci_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
 /* common code for handling submit messages - used for all but root hub */
 /* accesses. */
 int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
-		      int transfer_len, struct devrequest *setup, int interval)
+		int transfer_len, struct devrequest *setup, int interval)
 {
 	int stat = 0;
 	int maxsize = usb_maxpacket(dev, pipe);
@@ -1264,26 +1230,25 @@ int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 		dev->status = USB_ST_CRC_ERR;
 		return 0;
 	}
+
 #ifdef DEBUG
 	urb_priv.actual_length = 0;
-	pkt_print(dev, pipe, buffer, transfer_len, setup, "SUB",
-		  usb_pipein(pipe));
+	pkt_print(dev, pipe, buffer, transfer_len, setup, "SUB", usb_pipein(pipe));
 #endif
 	if (!maxsize) {
 		err("submit_common_message: pipesize for pipe %lx is zero",
-		    pipe);
+			pipe);
 		return -1;
 	}
 
-	if (sohci_submit_job(dev, pipe, buffer, transfer_len, setup, interval) <
-	    0) {
+	if (sohci_submit_job(dev, pipe, buffer, transfer_len, setup, interval) < 0) {
 		err("sohci_submit_job failed");
 		return -1;
 	}
 
 	/* allow more time for a BULK device to react - some are slow */
-#define BULK_TO	 5000		/* timeout in milliseconds */
-	if (usb_pipetype(pipe) == PIPE_BULK)
+#define BULK_TO	 5000	/* timeout in milliseconds */
+	if (usb_pipetype (pipe) == PIPE_BULK)
 		timeout = BULK_TO;
 	else
 		timeout = 100;
@@ -1296,28 +1261,45 @@ int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 			stat = USB_ST_CRC_ERR;
 			break;
 		}
-		if (stat >= 0 && stat < 0xff) {
+
+		/* NOTE: since we are not interrupt driven in U-Boot and always
+		 * handle only one URB at a time, we cannot assume the
+		 * transaction finished on the first successful return from
+		 * hc_interrupt().. unless the flag for current URB is set,
+		 * meaning that all TD's to/from device got actually
+		 * transferred and processed. If the current URB is not
+		 * finished we need to re-iterate this loop so as
+		 * hc_interrupt() gets called again as there needs to be some
+		 * more TD's to process still */
+		if ((stat >= 0) && (stat != 0xff) && (urb_finished)) {
 			/* 0xff is returned for an SF-interrupt */
 			break;
 		}
+
 		if (--timeout) {
 			wait_ms(1);
+			if (!urb_finished)
+				dbg("\%");
+
 		} else {
 			err("CTL:TIMEOUT ");
+			dbg("submit_common_msg: TO status %x\n", stat);
 			stat = USB_ST_CRC_ERR;
+			urb_finished = 1;
 			break;
 		}
 	}
+#if 0
 	/* we got an Root Hub Status Change interrupt */
 	if (got_rhsc) {
 #ifdef DEBUG
-		ohci_dump_roothub(&gohci, 1);
+		ohci_dump_roothub (&gohci, 1);
 #endif
 		got_rhsc = 0;
 		/* abuse timeout */
 		timeout = rh_check_port_status(&gohci);
 		if (timeout >= 0) {
-#if 0				/* this does nothing useful, but leave it here in case that changes */
+#if 0 /* this does nothing useful, but leave it here in case that changes */
 			/* the called routine adds 1 to the passed value */
 			usb_hub_port_connect_change(gohci.rh.dev, timeout - 1);
 #endif
@@ -1329,56 +1311,55 @@ int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 			devgone = dev;
 		}
 	}
+#endif
 
 	dev->status = stat;
 	dev->act_len = transfer_len;
 
 #ifdef DEBUG
-	pkt_print(dev, pipe, buffer, transfer_len, setup, "RET(ctlr)",
-		  usb_pipein(pipe));
+	pkt_print(dev, pipe, buffer, transfer_len, setup, "RET(ctlr)", usb_pipein(pipe));
 #endif
 
 	/* free TDs in urb_priv */
-	urb_free_priv(&urb_priv);
+	urb_free_priv (&urb_priv);
 	return 0;
 }
 
 /* submit routines called from usb.c */
 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
-		    int transfer_len)
+		int transfer_len)
 {
 	info("submit_bulk_msg");
 	return submit_common_msg(dev, pipe, buffer, transfer_len, NULL, 0);
 }
 
 int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
-		       int transfer_len, struct devrequest *setup)
+		int transfer_len, struct devrequest *setup)
 {
 	int maxsize = usb_maxpacket(dev, pipe);
 
 	info("submit_control_msg");
 #ifdef DEBUG
 	urb_priv.actual_length = 0;
-	pkt_print(dev, pipe, buffer, transfer_len, setup, "SUB",
-		  usb_pipein(pipe));
+	pkt_print(dev, pipe, buffer, transfer_len, setup, "SUB", usb_pipein(pipe));
 #endif
 	if (!maxsize) {
 		err("submit_control_message: pipesize for pipe %lx is zero",
-		    pipe);
+			pipe);
 		return -1;
 	}
 	if (((pipe >> 8) & 0x7f) == gohci.rh.devnum) {
 		gohci.rh.dev = dev;
 		/* root hub - redirect */
 		return ohci_submit_rh_msg(dev, pipe, buffer, transfer_len,
-					  setup);
+			setup);
 	}
 
 	return submit_common_msg(dev, pipe, buffer, transfer_len, setup, 0);
 }
 
 int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
-		   int transfer_len, int interval)
+		int transfer_len, int interval)
 {
 	info("submit_int_msg");
 	return -1;
@@ -1390,16 +1371,16 @@ int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 
 /* reset the HC and BUS */
 
-static int hc_reset(ohci_t * ohci)
+static int hc_reset (ohci_t *ohci)
 {
 	int timeout = 30;
-	int smm_timeout = 50;	/* 0,5 sec */
+	int smm_timeout = 50; /* 0,5 sec */
 
-	if (readl(&ohci->regs->control) & OHCI_CTRL_IR) {	/* SMM owns the HC */
-		writel(OHCI_OCR, &ohci->regs->cmdstatus);	/* request ownership */
+	if (readl (&ohci->regs->control) & OHCI_CTRL_IR) { /* SMM owns the HC */
+		writel (OHCI_OCR, &ohci->regs->cmdstatus); /* request ownership */
 		info("USB HC TakeOver from SMM");
-		while (readl(&ohci->regs->control) & OHCI_CTRL_IR) {
-			wait_ms(10);
+		while (readl (&ohci->regs->control) & OHCI_CTRL_IR) {
+			wait_ms (10);
 			if (--smm_timeout == 0) {
 				err("USB HC TakeOver failed!");
 				return -1;
@@ -1408,23 +1389,24 @@ static int hc_reset(ohci_t * ohci)
 	}
 
 	/* Disable HC interrupts */
-	writel(OHCI_INTR_MIE, &ohci->regs->intrdisable);
+	writel (OHCI_INTR_MIE, &ohci->regs->intrdisable);
 
 	dbg("USB HC reset_hc usb-%s: ctrl = 0x%X ;",
-	    ohci->slot_name, readl(&ohci->regs->control));
+		ohci->slot_name,
+		readl (&ohci->regs->control));
 
 	/* Reset USB (needed by some controllers) */
 	ohci->hc_control = 0;
-	writel(ohci->hc_control, &ohci->regs->control);
+	writel (ohci->hc_control, &ohci->regs->control);
 
 	/* HC Reset requires max 10 us delay */
-	writel(OHCI_HCR, &ohci->regs->cmdstatus);
-	while ((readl(&ohci->regs->cmdstatus) & OHCI_HCR) != 0) {
+	writel (OHCI_HCR,  &ohci->regs->cmdstatus);
+	while ((readl (&ohci->regs->cmdstatus) & OHCI_HCR) != 0) {
 		if (--timeout == 0) {
 			err("USB HC reset timed out!");
 			return -1;
 		}
-		udelay(1);
+		udelay (1);
 	}
 	return 0;
 }
@@ -1435,7 +1417,7 @@ static int hc_reset(ohci_t * ohci)
  * enable interrupts
  * connect the virtual root hub */
 
-static int hc_start(ohci_t * ohci)
+static int hc_start (ohci_t * ohci)
 {
 	__u32 mask;
 	unsigned int fminterval;
@@ -1445,44 +1427,44 @@ static int hc_start(ohci_t * ohci)
 	/* Tell the controller where the control and bulk lists are
 	 * The lists are empty now. */
 
-	writel(0, &ohci->regs->ed_controlhead);
-	writel(0, &ohci->regs->ed_bulkhead);
+	writel (0, &ohci->regs->ed_controlhead);
+	writel (0, &ohci->regs->ed_bulkhead);
 
-	writel((__u32) ohci->hcca, &ohci->regs->hcca);	/* a reset clears this */
+	writel ((__u32)ohci->hcca, &ohci->regs->hcca); /* a reset clears this */
 
 	fminterval = 0x2edf;
-	writel((fminterval * 9) / 10, &ohci->regs->periodicstart);
+	writel ((fminterval * 9) / 10, &ohci->regs->periodicstart);
 	fminterval |= ((((fminterval - 210) * 6) / 7) << 16);
-	writel(fminterval, &ohci->regs->fminterval);
-	writel(0x628, &ohci->regs->lsthresh);
+	writel (fminterval, &ohci->regs->fminterval);
+	writel (0x628, &ohci->regs->lsthresh);
 
 	/* start controller operations */
 	ohci->hc_control = OHCI_CONTROL_INIT | OHCI_USB_OPER;
 	ohci->disabled = 0;
-	writel(ohci->hc_control, &ohci->regs->control);
+	writel (ohci->hc_control, &ohci->regs->control);
 
 	/* disable all interrupts */
 	mask = (OHCI_INTR_SO | OHCI_INTR_WDH | OHCI_INTR_SF | OHCI_INTR_RD |
-		OHCI_INTR_UE | OHCI_INTR_FNO | OHCI_INTR_RHSC |
-		OHCI_INTR_OC | OHCI_INTR_MIE);
-	writel(mask, &ohci->regs->intrdisable);
+			OHCI_INTR_UE | OHCI_INTR_FNO | OHCI_INTR_RHSC |
+			OHCI_INTR_OC | OHCI_INTR_MIE);
+	writel (mask, &ohci->regs->intrdisable);
 	/* clear all interrupts */
 	mask &= ~OHCI_INTR_MIE;
-	writel(mask, &ohci->regs->intrstatus);
+	writel (mask, &ohci->regs->intrstatus);
 	/* Choose the interrupts we care about now  - but w/o MIE */
 	mask = OHCI_INTR_RHSC | OHCI_INTR_UE | OHCI_INTR_WDH | OHCI_INTR_SO;
-	writel(mask, &ohci->regs->intrenable);
+	writel (mask, &ohci->regs->intrenable);
 
 #ifdef	OHCI_USE_NPS
 	/* required for AMD-756 and some Mac platforms */
-	writel((roothub_a(ohci) | RH_A_NPS) & ~RH_A_PSM,
-	       &ohci->regs->roothub.a);
-	writel(RH_HS_LPSC, &ohci->regs->roothub.status);
-#endif				/* OHCI_USE_NPS */
+	writel ((roothub_a (ohci) | RH_A_NPS) & ~RH_A_PSM,
+		&ohci->regs->roothub.a);
+	writel (RH_HS_LPSC, &ohci->regs->roothub.status);
+#endif	/* OHCI_USE_NPS */
 
 #define mdelay(n) ({unsigned long msec=(n); while (msec--) udelay(1000);})
 	/* POTPGT delay is bits 24-31, in 2 ms units. */
-	mdelay((roothub_a(ohci) >> 23) & 0x1fe);
+	mdelay ((roothub_a (ohci) >> 23) & 0x1fe);
 
 	/* connect the virtual root hub */
 	ohci->rh.devnum = 0;
@@ -1494,65 +1476,76 @@ static int hc_start(ohci_t * ohci)
 
 /* an interrupt happens */
 
-static int hc_interrupt(void)
+static int
+hc_interrupt (void)
 {
 	ohci_t *ohci = &gohci;
 	struct ohci_regs *regs = ohci->regs;
 	int ints;
 	int stat = -1;
 
-	if ((ohci->hcca->done_head != 0)
-	    && !(ohci_cpu_to_le32(ohci->hcca->done_head) & 0x01)) {
-		ints = OHCI_INTR_WDH;
-	} else {
-		ints = readl(&regs->intrstatus);
+	if ((ohci->hcca->done_head != 0) &&
+	     !(ohci_cpu_to_le32(ohci->hcca->done_head) & 0x01)) {
+
+		ints =  OHCI_INTR_WDH;
+
+	} else if ((ints = readl (&regs->intrstatus)) == ~(u32)0) {
+		ohci->disabled++;
+		err ("%s device removed!", ohci->slot_name);
+		return -1;
+
+	} else if ((ints &= readl (&regs->intrenable)) == 0) {
+		dbg("hc_interrupt: returning..\n");
+		return 0xff;
 	}
 
 	/* dbg("Interrupt: %x frame: %x", ints, le16_to_cpu (ohci->hcca->frame_no)); */
 
 	if (ints & OHCI_INTR_RHSC) {
 		got_rhsc = 1;
+		stat = 0xff;
 	}
 
 	if (ints & OHCI_INTR_UE) {
 		ohci->disabled++;
-		err("OHCI Unrecoverable Error, controller usb-%s disabled",
-		    ohci->slot_name);
+		err ("OHCI Unrecoverable Error, controller usb-%s disabled",
+			ohci->slot_name);
 		/* e.g. due to PCI Master/Target Abort */
 
 #ifdef	DEBUG
-		ohci_dump(ohci, 1);
+		ohci_dump (ohci, 1);
 #endif
 		/* FIXME: be optimistic, hope that bug won't repeat often. */
 		/* Make some non-interrupt context restart the controller. */
 		/* Count and limit the retries though; either hardware or */
 		/* software errors can go forever... */
-		hc_reset(ohci);
+		hc_reset (ohci);
 		return -1;
 	}
 
 	if (ints & OHCI_INTR_WDH) {
-		writel(OHCI_INTR_WDH, &regs->intrdisable);
-		stat = dl_done_list(&gohci, dl_reverse_done_list(&gohci));
-		writel(OHCI_INTR_WDH, &regs->intrenable);
+		writel (OHCI_INTR_WDH, &regs->intrdisable);
+		stat = dl_done_list (&gohci, dl_reverse_done_list (&gohci));
+		writel (OHCI_INTR_WDH, &regs->intrenable);
 	}
 
 	if (ints & OHCI_INTR_SO) {
 		dbg("USB Schedule overrun\n");
-		writel(OHCI_INTR_SO, &regs->intrenable);
+		writel (OHCI_INTR_SO, &regs->intrenable);
 		stat = -1;
 	}
 
 	/* FIXME:  this assumes SOF (1/ms) interrupts don't get lost... */
 	if (ints & OHCI_INTR_SF) {
-		unsigned int frame = ohci_cpu_to_le16(ohci->hcca->frame_no) & 1;
-		writel(OHCI_INTR_SF, &regs->intrdisable);
+		unsigned int frame = ohci_cpu_to_le16 (ohci->hcca->frame_no) & 1;
+		wait_ms(1);
+		writel (OHCI_INTR_SF, &regs->intrdisable);
 		if (ohci->ed_rm_list[frame] != NULL)
-			writel(OHCI_INTR_SF, &regs->intrenable);
+			writel (OHCI_INTR_SF, &regs->intrenable);
 		stat = 0xff;
 	}
 
-	writel(ints, &regs->intrstatus);
+	writel (ints, &regs->intrstatus);
 	return stat;
 }
 
@@ -1562,12 +1555,12 @@ static int hc_interrupt(void)
 
 /* De-allocate all resources.. */
 
-static void hc_release_ohci(ohci_t * ohci)
+static void hc_release_ohci (ohci_t *ohci)
 {
-	dbg("USB HC release ohci usb-%s", ohci->slot_name);
+	dbg ("USB HC release ohci usb-%s", ohci->slot_name);
 
 	if (!ohci->disabled)
-		hc_reset(ohci);
+		hc_reset (ohci);
 }
 
 /*-------------------------------------------------------------------------*/
@@ -1579,30 +1572,29 @@ static char ohci_inited = 0;
 
 int usb_lowlevel_init(void)
 {
-
-	memset(&gohci, 0, sizeof(ohci_t));
-	memset(&urb_priv, 0, sizeof(urb_priv_t));
+	memset (&gohci, 0, sizeof (ohci_t));
+	memset (&urb_priv, 0, sizeof (urb_priv_t));
 
 	/* align the storage */
-	if ((__u32) & ghcca[0] & 0xff) {
+	if ((__u32)&ghcca[0] & 0xff) {
 		err("HCCA not aligned!!");
 		return -1;
 	}
 	phcca = &ghcca[0];
 	info("aligned ghcca %p", phcca);
 	memset(&ohci_dev, 0, sizeof(struct ohci_device));
-	if ((__u32) & ohci_dev.ed[0] & 0x7) {
+	if ((__u32)&ohci_dev.ed[0] & 0x7) {
 		err("EDs not aligned!!");
 		return -1;
 	}
 	memset(gtd, 0, sizeof(td_t) * (NUM_TD + 1));
-	if ((__u32) gtd & 0x7) {
+	if ((__u32)gtd & 0x7) {
 		err("TDs not aligned!!");
 		return -1;
 	}
 	ptd = gtd;
 	gohci.hcca = phcca;
-	memset(phcca, 0, sizeof(struct ohci_hcca));
+	memset (phcca, 0, sizeof (struct ohci_hcca));
 
 	gohci.disabled = 1;
 	gohci.sleeping = 0;
@@ -1612,20 +1604,22 @@ int usb_lowlevel_init(void)
 	gohci.flags = 0;
 	gohci.slot_name = "ppc440";
 
-	if (hc_reset(&gohci) < 0) {
-		hc_release_ohci(&gohci);
+	if (hc_reset (&gohci) < 0) {
+		hc_release_ohci (&gohci);
 		return -1;
 	}
 
-	if (hc_start(&gohci) < 0) {
-		err("can't start usb-%s", gohci.slot_name);
-		hc_release_ohci(&gohci);
+	if (hc_start (&gohci) < 0) {
+		err ("can't start usb-%s", gohci.slot_name);
+		hc_release_ohci (&gohci);
 		return -1;
 	}
+
 #ifdef	DEBUG
-	ohci_dump(&gohci, 1);
+	ohci_dump (&gohci, 1);
 #endif
 	ohci_inited = 1;
+	urb_finished = 1;
 
 	/* init the device driver */
 	usb_dev_init();
@@ -1641,8 +1635,8 @@ int usb_lowlevel_stop(void)
 		return 0;
 	/* TODO release any interrupts, etc. */
 	/* call hc_release_ohci() here ? */
-	hc_reset(&gohci);
+	hc_reset (&gohci);
 	return 0;
 }
 
-#endif				/* CONFIG_USB_OHCI */
+#endif /* CONFIG_USB_OHCI */