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-rw-r--r--drivers/scsi/ahci.c9
-rw-r--r--drivers/scsi/libata-core.c41
-rw-r--r--drivers/scsi/sata_mv.c18
-rw-r--r--drivers/scsi/sata_sil24.c8
-rw-r--r--include/linux/libata.h2
5 files changed, 9 insertions, 69 deletions
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index fe8187d6f58b..03829aedfd39 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -192,7 +192,6 @@ static void ahci_port_stop(struct ata_port *ap);
static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
static void ahci_qc_prep(struct ata_queued_cmd *qc);
static u8 ahci_check_status(struct ata_port *ap);
-static u8 ahci_check_err(struct ata_port *ap);
static inline int ahci_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc);
static void ahci_remove_one (struct pci_dev *pdev);
@@ -221,7 +220,6 @@ static const struct ata_port_operations ahci_ops = {
.check_status = ahci_check_status,
.check_altstatus = ahci_check_status,
- .check_err = ahci_check_err,
.dev_select = ata_noop_dev_select,
.tf_read = ahci_tf_read,
@@ -458,13 +456,6 @@ static u8 ahci_check_status(struct ata_port *ap)
return readl(mmio + PORT_TFDATA) & 0xFF;
}
-static u8 ahci_check_err(struct ata_port *ap)
-{
- void __iomem *mmio = (void __iomem *) ap->ioaddr.cmd_addr;
-
- return (readl(mmio + PORT_TFDATA) >> 8) & 0xFF;
-}
-
static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
{
struct ahci_port_priv *pp = ap->private_data;
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index b1b1c6f01419..d2f71a2331bb 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -371,7 +371,7 @@ static void ata_tf_read_pio(struct ata_port *ap, struct ata_taskfile *tf)
struct ata_ioports *ioaddr = &ap->ioaddr;
tf->command = ata_check_status(ap);
- tf->feature = ata_chk_err(ap);
+ tf->feature = inb(ioaddr->error_addr);
tf->nsect = inb(ioaddr->nsect_addr);
tf->lbal = inb(ioaddr->lbal_addr);
tf->lbam = inb(ioaddr->lbam_addr);
@@ -405,7 +405,7 @@ static void ata_tf_read_mmio(struct ata_port *ap, struct ata_taskfile *tf)
struct ata_ioports *ioaddr = &ap->ioaddr;
tf->command = ata_check_status(ap);
- tf->feature = ata_chk_err(ap);
+ tf->feature = readb((void __iomem *)ioaddr->error_addr);
tf->nsect = readb((void __iomem *)ioaddr->nsect_addr);
tf->lbal = readb((void __iomem *)ioaddr->lbal_addr);
tf->lbam = readb((void __iomem *)ioaddr->lbam_addr);
@@ -526,30 +526,6 @@ u8 ata_altstatus(struct ata_port *ap)
/**
- * ata_chk_err - Read device error reg
- * @ap: port where the device is
- *
- * Reads ATA taskfile error register for
- * currently-selected device and return its value.
- *
- * Note: may NOT be used as the check_err() entry in
- * ata_port_operations.
- *
- * LOCKING:
- * Inherited from caller.
- */
-u8 ata_chk_err(struct ata_port *ap)
-{
- if (ap->ops->check_err)
- return ap->ops->check_err(ap);
-
- if (ap->flags & ATA_FLAG_MMIO) {
- return readb((void __iomem *) ap->ioaddr.error_addr);
- }
- return inb(ap->ioaddr.error_addr);
-}
-
-/**
* ata_tf_to_fis - Convert ATA taskfile to SATA FIS structure
* @tf: Taskfile to convert
* @fis: Buffer into which data will output
@@ -901,8 +877,8 @@ static u8 ata_dev_try_classify(struct ata_port *ap, unsigned int device)
memset(&tf, 0, sizeof(tf));
- err = ata_chk_err(ap);
ap->ops->tf_read(ap, &tf);
+ err = tf.feature;
dev->class = ATA_DEV_NONE;
@@ -1139,7 +1115,6 @@ static void ata_dev_identify(struct ata_port *ap, unsigned int device)
unsigned int major_version;
u16 tmp;
unsigned long xfer_modes;
- u8 status;
unsigned int using_edd;
DECLARE_COMPLETION(wait);
struct ata_queued_cmd *qc;
@@ -1193,8 +1168,11 @@ retry:
else
wait_for_completion(&wait);
- status = ata_chk_status(ap);
- if (status & ATA_ERR) {
+ spin_lock_irqsave(&ap->host_set->lock, flags);
+ ap->ops->tf_read(ap, &qc->tf);
+ spin_unlock_irqrestore(&ap->host_set->lock, flags);
+
+ if (qc->tf.command & ATA_ERR) {
/*
* arg! EDD works for all test cases, but seems to return
* the ATA signature for some ATAPI devices. Until the
@@ -1207,7 +1185,7 @@ retry:
* to have this problem.
*/
if ((using_edd) && (qc->tf.command == ATA_CMD_ID_ATA)) {
- u8 err = ata_chk_err(ap);
+ u8 err = qc->tf.feature;
if (err & ATA_ABORTED) {
dev->class = ATA_DEV_ATAPI;
qc->cursg = 0;
@@ -4873,7 +4851,6 @@ EXPORT_SYMBOL_GPL(ata_tf_to_fis);
EXPORT_SYMBOL_GPL(ata_tf_from_fis);
EXPORT_SYMBOL_GPL(ata_check_status);
EXPORT_SYMBOL_GPL(ata_altstatus);
-EXPORT_SYMBOL_GPL(ata_chk_err);
EXPORT_SYMBOL_GPL(ata_exec_command);
EXPORT_SYMBOL_GPL(ata_port_start);
EXPORT_SYMBOL_GPL(ata_port_stop);
diff --git a/drivers/scsi/sata_mv.c b/drivers/scsi/sata_mv.c
index 422e0b6f603a..dcef5fe8600b 100644
--- a/drivers/scsi/sata_mv.c
+++ b/drivers/scsi/sata_mv.c
@@ -258,7 +258,6 @@ struct mv_host_priv {
static void mv_irq_clear(struct ata_port *ap);
static u32 mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in);
static void mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val);
-static u8 mv_check_err(struct ata_port *ap);
static void mv_phy_reset(struct ata_port *ap);
static void mv_host_stop(struct ata_host_set *host_set);
static int mv_port_start(struct ata_port *ap);
@@ -296,7 +295,6 @@ static const struct ata_port_operations mv_ops = {
.tf_load = ata_tf_load,
.tf_read = ata_tf_read,
.check_status = ata_check_status,
- .check_err = mv_check_err,
.exec_command = ata_exec_command,
.dev_select = ata_std_dev_select,
@@ -1185,22 +1183,6 @@ static irqreturn_t mv_interrupt(int irq, void *dev_instance,
}
/**
- * mv_check_err - Return the error shadow register to caller.
- * @ap: ATA channel to manipulate
- *
- * Marvell requires DMA to be stopped before accessing shadow
- * registers. So we do that, then return the needed register.
- *
- * LOCKING:
- * Inherited from caller. FIXME: protect mv_stop_dma with lock?
- */
-static u8 mv_check_err(struct ata_port *ap)
-{
- mv_stop_dma(ap); /* can't read shadow regs if DMA on */
- return readb((void __iomem *) ap->ioaddr.error_addr);
-}
-
-/**
* mv_phy_reset - Perform eDMA reset followed by COMRESET
* @ap: ATA channel to manipulate
*
diff --git a/drivers/scsi/sata_sil24.c b/drivers/scsi/sata_sil24.c
index 51855d3bac64..e18a1e2bb65e 100644
--- a/drivers/scsi/sata_sil24.c
+++ b/drivers/scsi/sata_sil24.c
@@ -225,7 +225,6 @@ struct sil24_host_priv {
};
static u8 sil24_check_status(struct ata_port *ap);
-static u8 sil24_check_err(struct ata_port *ap);
static u32 sil24_scr_read(struct ata_port *ap, unsigned sc_reg);
static void sil24_scr_write(struct ata_port *ap, unsigned sc_reg, u32 val);
static void sil24_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
@@ -280,7 +279,6 @@ static const struct ata_port_operations sil24_ops = {
.check_status = sil24_check_status,
.check_altstatus = sil24_check_status,
- .check_err = sil24_check_err,
.dev_select = ata_noop_dev_select,
.tf_read = sil24_tf_read,
@@ -363,12 +361,6 @@ static u8 sil24_check_status(struct ata_port *ap)
return pp->tf.command;
}
-static u8 sil24_check_err(struct ata_port *ap)
-{
- struct sil24_port_priv *pp = ap->private_data;
- return pp->tf.feature;
-}
-
static int sil24_scr_map[] = {
[SCR_CONTROL] = 0,
[SCR_STATUS] = 1,
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 00a8a5738858..a4cce9936a80 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -347,7 +347,6 @@ struct ata_port_operations {
void (*exec_command)(struct ata_port *ap, const struct ata_taskfile *tf);
u8 (*check_status)(struct ata_port *ap);
u8 (*check_altstatus)(struct ata_port *ap);
- u8 (*check_err)(struct ata_port *ap);
void (*dev_select)(struct ata_port *ap, unsigned int device);
void (*phy_reset) (struct ata_port *ap);
@@ -434,7 +433,6 @@ extern void ata_noop_dev_select (struct ata_port *ap, unsigned int device);
extern void ata_std_dev_select (struct ata_port *ap, unsigned int device);
extern u8 ata_check_status(struct ata_port *ap);
extern u8 ata_altstatus(struct ata_port *ap);
-extern u8 ata_chk_err(struct ata_port *ap);
extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf);
extern int ata_port_start (struct ata_port *ap);
extern void ata_port_stop (struct ata_port *ap);
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