Merge tag 'v3.13-rc4' into next

Linux 3.13-rc4

* tag 'v3.13-rc4': (1001 commits)
  Linux 3.13-rc4
  null_blk: mem garbage on NUMA systems during init
  radeon_pm: fix oops in hwmon_attributes_visible() and radeon_hwmon_show_temp_thresh()
  Revert "selinux: consider filesystem subtype in policies"
  igb: Fix for issue where values could be too high for udelay function.
  i40e: fix null dereference
  ARM: fix asm/memory.h build error
  dm array: fix a reference counting bug in shadow_ablock
  dm space map: disallow decrementing a reference count below zero
  mm: memcg: do not allow task about to OOM kill to bypass the limit
  mm: memcg: fix race condition between memcg teardown and swapin
  thp: move preallocated PTE page table on move_huge_pmd()
  mfd/rtc: s5m: fix register updating by adding regmap for RTC
  rtc: s5m: enable IRQ wake during suspend
  rtc: s5m: limit endless loop waiting for register update
  rtc: s5m: fix unsuccesful IRQ request during probe
  drivers/rtc/rtc-s5m.c: fix info->rtc assignment
  include/linux/kernel.h: make might_fault() a nop for !MMU
  drivers/rtc/rtc-at91rm9200.c: correct alarm over day/month wrap
  procfs: also fix proc_reg_get_unmapped_area() for !MMU case
  ...

Signed-off-by: Felipe Balbi <balbi@ti.com>

7 files changed, 72 insertions, 42 deletions

diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c
index f16ece91b94a..0a1296a87d66 100644
--- a/drivers/scsi/pm8001/pm8001_hwi.c
+++ b/drivers/scsi/pm8001/pm8001_hwi.c
@@ -3403,6 +3403,7 @@ hw_event_sas_phy_up(struct pm8001_hba_info *pm8001_ha, void *piomb)
 	unsigned long flags;
 	u8 deviceType = pPayload->sas_identify.dev_type;
 	port->port_state =  portstate;
+	phy->phy_state = PHY_STATE_LINK_UP_SPC;
 	PM8001_MSG_DBG(pm8001_ha,
 		pm8001_printk("HW_EVENT_SAS_PHY_UP port id = %d, phy id = %d\n",
 		port_id, phy_id));
@@ -3483,6 +3484,7 @@ hw_event_sata_phy_up(struct pm8001_hba_info *pm8001_ha, void *piomb)
 		pm8001_printk("HW_EVENT_SATA_PHY_UP port id = %d,"
 		" phy id = %d\n", port_id, phy_id));
 	port->port_state =  portstate;
+	phy->phy_state = PHY_STATE_LINK_UP_SPC;
 	port->port_attached = 1;
 	pm8001_get_lrate_mode(phy, link_rate);
 	phy->phy_type |= PORT_TYPE_SATA;
diff --git a/drivers/scsi/pm8001/pm8001_hwi.h b/drivers/scsi/pm8001/pm8001_hwi.h
index 6d91e2446542..e4867e690c84 100644
--- a/drivers/scsi/pm8001/pm8001_hwi.h
+++ b/drivers/scsi/pm8001/pm8001_hwi.h
@@ -131,6 +131,10 @@
 #define LINKRATE_30			(0x02 << 8)
 #define LINKRATE_60			(0x04 << 8)
 
+/* for phy state */
+
+#define PHY_STATE_LINK_UP_SPC		0x1
+
 /* for new SPC controllers MEMBASE III is shared between BIOS and DATA */
 #define GSM_SM_BASE			0x4F0000
 struct mpi_msg_hdr{
diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c
index 34f5f5ffef05..73a120d81b4d 100644
--- a/drivers/scsi/pm8001/pm8001_init.c
+++ b/drivers/scsi/pm8001/pm8001_init.c
@@ -175,20 +175,16 @@ static void pm8001_free(struct pm8001_hba_info *pm8001_ha)
 static void pm8001_tasklet(unsigned long opaque)
 {
 	struct pm8001_hba_info *pm8001_ha;
-	u32 vec;
-	pm8001_ha = (struct pm8001_hba_info *)opaque;
+	struct isr_param *irq_vector;
+
+	irq_vector = (struct isr_param *)opaque;
+	pm8001_ha = irq_vector->drv_inst;
 	if (unlikely(!pm8001_ha))
 		BUG_ON(1);
-	vec = pm8001_ha->int_vector;
-	PM8001_CHIP_DISP->isr(pm8001_ha, vec);
+	PM8001_CHIP_DISP->isr(pm8001_ha, irq_vector->irq_id);
 }
 #endif
 
-static struct  pm8001_hba_info *outq_to_hba(u8 *outq)
-{
-	return container_of((outq - *outq), struct pm8001_hba_info, outq[0]);
-}
-
 /**
  * pm8001_interrupt_handler_msix - main MSIX interrupt handler.
  * It obtains the vector number and calls the equivalent bottom
@@ -198,18 +194,20 @@ static struct  pm8001_hba_info *outq_to_hba(u8 *outq)
  */
 static irqreturn_t pm8001_interrupt_handler_msix(int irq, void *opaque)
 {
-	struct pm8001_hba_info *pm8001_ha = outq_to_hba(opaque);
-	u8 outq = *(u8 *)opaque;
+	struct isr_param *irq_vector;
+	struct pm8001_hba_info *pm8001_ha;
 	irqreturn_t ret = IRQ_HANDLED;
+	irq_vector = (struct isr_param *)opaque;
+	pm8001_ha = irq_vector->drv_inst;
+
 	if (unlikely(!pm8001_ha))
 		return IRQ_NONE;
 	if (!PM8001_CHIP_DISP->is_our_interupt(pm8001_ha))
 		return IRQ_NONE;
-	pm8001_ha->int_vector = outq;
 #ifdef PM8001_USE_TASKLET
-	tasklet_schedule(&pm8001_ha->tasklet);
+	tasklet_schedule(&pm8001_ha->tasklet[irq_vector->irq_id]);
 #else
-	ret = PM8001_CHIP_DISP->isr(pm8001_ha, outq);
+	ret = PM8001_CHIP_DISP->isr(pm8001_ha, irq_vector->irq_id);
 #endif
 	return ret;
 }
@@ -230,9 +228,8 @@ static irqreturn_t pm8001_interrupt_handler_intx(int irq, void *dev_id)
 	if (!PM8001_CHIP_DISP->is_our_interupt(pm8001_ha))
 		return IRQ_NONE;
 
-	pm8001_ha->int_vector = 0;
 #ifdef PM8001_USE_TASKLET
-	tasklet_schedule(&pm8001_ha->tasklet);
+	tasklet_schedule(&pm8001_ha->tasklet[0]);
 #else
 	ret = PM8001_CHIP_DISP->isr(pm8001_ha, 0);
 #endif
@@ -457,7 +454,7 @@ static struct pm8001_hba_info *pm8001_pci_alloc(struct pci_dev *pdev,
 {
 	struct pm8001_hba_info *pm8001_ha;
 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
-
+	int j;
 
 	pm8001_ha = sha->lldd_ha;
 	if (!pm8001_ha)
@@ -480,12 +477,14 @@ static struct pm8001_hba_info *pm8001_pci_alloc(struct pci_dev *pdev,
 		pm8001_ha->iomb_size = IOMB_SIZE_SPC;
 
 #ifdef PM8001_USE_TASKLET
-	/**
-	* default tasklet for non msi-x interrupt handler/first msi-x
-	* interrupt handler
-	**/
-	tasklet_init(&pm8001_ha->tasklet, pm8001_tasklet,
-			(unsigned long)pm8001_ha);
+	/* Tasklet for non msi-x interrupt handler */
+	if ((!pdev->msix_cap) || (pm8001_ha->chip_id == chip_8001))
+		tasklet_init(&pm8001_ha->tasklet[0], pm8001_tasklet,
+			(unsigned long)&(pm8001_ha->irq_vector[0]));
+	else
+		for (j = 0; j < PM8001_MAX_MSIX_VEC; j++)
+			tasklet_init(&pm8001_ha->tasklet[j], pm8001_tasklet,
+				(unsigned long)&(pm8001_ha->irq_vector[j]));
 #endif
 	pm8001_ioremap(pm8001_ha);
 	if (!pm8001_alloc(pm8001_ha, ent))
@@ -733,19 +732,20 @@ static u32 pm8001_setup_msix(struct pm8001_hba_info *pm8001_ha)
 			"pci_enable_msix request ret:%d no of intr %d\n",
 					rc, pm8001_ha->number_of_intr));
 
-		for (i = 0; i < number_of_intr; i++)
-			pm8001_ha->outq[i] = i;
 
 		for (i = 0; i < number_of_intr; i++) {
 			snprintf(intr_drvname[i], sizeof(intr_drvname[0]),
 					DRV_NAME"%d", i);
+			pm8001_ha->irq_vector[i].irq_id = i;
+			pm8001_ha->irq_vector[i].drv_inst = pm8001_ha;
+
 			if (request_irq(pm8001_ha->msix_entries[i].vector,
 				pm8001_interrupt_handler_msix, flag,
-				intr_drvname[i], &pm8001_ha->outq[i])) {
+				intr_drvname[i], &(pm8001_ha->irq_vector[i]))) {
 				for (j = 0; j < i; j++)
 					free_irq(
 					pm8001_ha->msix_entries[j].vector,
-					&pm8001_ha->outq[j]);
+					&(pm8001_ha->irq_vector[i]));
 				pci_disable_msix(pm8001_ha->pdev);
 				break;
 			}
@@ -907,7 +907,7 @@ static void pm8001_pci_remove(struct pci_dev *pdev)
 {
 	struct sas_ha_struct *sha = pci_get_drvdata(pdev);
 	struct pm8001_hba_info *pm8001_ha;
-	int i;
+	int i, j;
 	pm8001_ha = sha->lldd_ha;
 	sas_unregister_ha(sha);
 	sas_remove_host(pm8001_ha->shost);
@@ -921,13 +921,18 @@ static void pm8001_pci_remove(struct pci_dev *pdev)
 		synchronize_irq(pm8001_ha->msix_entries[i].vector);
 	for (i = 0; i < pm8001_ha->number_of_intr; i++)
 		free_irq(pm8001_ha->msix_entries[i].vector,
-				&pm8001_ha->outq[i]);
+				&(pm8001_ha->irq_vector[i]));
 	pci_disable_msix(pdev);
 #else
 	free_irq(pm8001_ha->irq, sha);
 #endif
 #ifdef PM8001_USE_TASKLET
-	tasklet_kill(&pm8001_ha->tasklet);
+	/* For non-msix and msix interrupts */
+	if ((!pdev->msix_cap) || (pm8001_ha->chip_id == chip_8001))
+		tasklet_kill(&pm8001_ha->tasklet[0]);
+	else
+		for (j = 0; j < PM8001_MAX_MSIX_VEC; j++)
+			tasklet_kill(&pm8001_ha->tasklet[j]);
 #endif
 	pm8001_free(pm8001_ha);
 	kfree(sha->sas_phy);
@@ -948,7 +953,7 @@ static int pm8001_pci_suspend(struct pci_dev *pdev, pm_message_t state)
 {
 	struct sas_ha_struct *sha = pci_get_drvdata(pdev);
 	struct pm8001_hba_info *pm8001_ha;
-	int i;
+	int  i, j;
 	u32 device_state;
 	pm8001_ha = sha->lldd_ha;
 	flush_workqueue(pm8001_wq);
@@ -964,13 +969,18 @@ static int pm8001_pci_suspend(struct pci_dev *pdev, pm_message_t state)
 		synchronize_irq(pm8001_ha->msix_entries[i].vector);
 	for (i = 0; i < pm8001_ha->number_of_intr; i++)
 		free_irq(pm8001_ha->msix_entries[i].vector,
-				&pm8001_ha->outq[i]);
+				&(pm8001_ha->irq_vector[i]));
 	pci_disable_msix(pdev);
 #else
 	free_irq(pm8001_ha->irq, sha);
 #endif
 #ifdef PM8001_USE_TASKLET
-	tasklet_kill(&pm8001_ha->tasklet);
+	/* For non-msix and msix interrupts */
+	if ((!pdev->msix_cap) || (pm8001_ha->chip_id == chip_8001))
+		tasklet_kill(&pm8001_ha->tasklet[0]);
+	else
+		for (j = 0; j < PM8001_MAX_MSIX_VEC; j++)
+			tasklet_kill(&pm8001_ha->tasklet[j]);
 #endif
 	device_state = pci_choose_state(pdev, state);
 	pm8001_printk("pdev=0x%p, slot=%s, entering "
@@ -993,7 +1003,7 @@ static int pm8001_pci_resume(struct pci_dev *pdev)
 	struct sas_ha_struct *sha = pci_get_drvdata(pdev);
 	struct pm8001_hba_info *pm8001_ha;
 	int rc;
-	u8 i = 0;
+	u8 i = 0, j;
 	u32 device_state;
 	pm8001_ha = sha->lldd_ha;
 	device_state = pdev->current_state;
@@ -1033,10 +1043,14 @@ static int pm8001_pci_resume(struct pci_dev *pdev)
 	if (rc)
 		goto err_out_disable;
 #ifdef PM8001_USE_TASKLET
-	/* default tasklet for non msi-x interrupt handler/first msi-x
-	* interrupt handler */
-	tasklet_init(&pm8001_ha->tasklet, pm8001_tasklet,
-			(unsigned long)pm8001_ha);
+	/*  Tasklet for non msi-x interrupt handler */
+	if ((!pdev->msix_cap) || (pm8001_ha->chip_id == chip_8001))
+		tasklet_init(&pm8001_ha->tasklet[0], pm8001_tasklet,
+			(unsigned long)&(pm8001_ha->irq_vector[0]));
+	else
+		for (j = 0; j < PM8001_MAX_MSIX_VEC; j++)
+			tasklet_init(&pm8001_ha->tasklet[j], pm8001_tasklet,
+				(unsigned long)&(pm8001_ha->irq_vector[j]));
 #endif
 	PM8001_CHIP_DISP->interrupt_enable(pm8001_ha, 0);
 	if (pm8001_ha->chip_id != chip_8001) {
@@ -1169,6 +1183,7 @@ module_exit(pm8001_exit);
 MODULE_AUTHOR("Jack Wang <jack_wang@usish.com>");
 MODULE_AUTHOR("Anand Kumar Santhanam <AnandKumar.Santhanam@pmcs.com>");
 MODULE_AUTHOR("Sangeetha Gnanasekaran <Sangeetha.Gnanasekaran@pmcs.com>");
+MODULE_AUTHOR("Nikith Ganigarakoppal <Nikith.Ganigarakoppal@pmcs.com>");
 MODULE_DESCRIPTION(
 		"PMC-Sierra PM8001/8081/8088/8089/8074/8076/8077 "
 		"SAS/SATA controller driver");
diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c
index f4eb18e51631..f50ac44b950e 100644
--- a/drivers/scsi/pm8001/pm8001_sas.c
+++ b/drivers/scsi/pm8001/pm8001_sas.c
@@ -1098,15 +1098,17 @@ int pm8001_lu_reset(struct domain_device *dev, u8 *lun)
 	struct pm8001_tmf_task tmf_task;
 	struct pm8001_device *pm8001_dev = dev->lldd_dev;
 	struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
+	DECLARE_COMPLETION_ONSTACK(completion_setstate);
 	if (dev_is_sata(dev)) {
 		struct sas_phy *phy = sas_get_local_phy(dev);
 		rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
 			dev, 1, 0);
 		rc = sas_phy_reset(phy, 1);
 		sas_put_local_phy(phy);
+		pm8001_dev->setds_completion = &completion_setstate;
 		rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
 			pm8001_dev, 0x01);
-		msleep(2000);
+		wait_for_completion(&completion_setstate);
 	} else {
 		tmf_task.tmf = TMF_LU_RESET;
 		rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
diff --git a/drivers/scsi/pm8001/pm8001_sas.h b/drivers/scsi/pm8001/pm8001_sas.h
index 6037d477a183..6c5fd5ee22d3 100644
--- a/drivers/scsi/pm8001/pm8001_sas.h
+++ b/drivers/scsi/pm8001/pm8001_sas.h
@@ -466,6 +466,10 @@ struct pm8001_hba_memspace {
 	u64			membase;
 	u32			memsize;
 };
+struct isr_param {
+	struct pm8001_hba_info *drv_inst;
+	u32 irq_id;
+};
 struct pm8001_hba_info {
 	char			name[PM8001_NAME_LENGTH];
 	struct list_head	list;
@@ -519,14 +523,13 @@ struct pm8001_hba_info {
 	int			number_of_intr;/*will be used in remove()*/
 #endif
 #ifdef PM8001_USE_TASKLET
-	struct tasklet_struct	tasklet;
+	struct tasklet_struct	tasklet[PM8001_MAX_MSIX_VEC];
 #endif
 	u32			logging_level;
 	u32			fw_status;
 	u32			smp_exp_mode;
-	u32			int_vector;
 	const struct firmware 	*fw_image;
-	u8			outq[PM8001_MAX_MSIX_VEC];
+	struct isr_param irq_vector[PM8001_MAX_MSIX_VEC];
 };
 
 struct pm8001_work {
diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c
index 8987b1706216..c950dc5c9943 100644
--- a/drivers/scsi/pm8001/pm80xx_hwi.c
+++ b/drivers/scsi/pm8001/pm80xx_hwi.c
@@ -2894,6 +2894,7 @@ hw_event_sas_phy_up(struct pm8001_hba_info *pm8001_ha, void *piomb)
 	unsigned long flags;
 	u8 deviceType = pPayload->sas_identify.dev_type;
 	port->port_state = portstate;
+	phy->phy_state = PHY_STATE_LINK_UP_SPCV;
 	PM8001_MSG_DBG(pm8001_ha, pm8001_printk(
 		"portid:%d; phyid:%d; linkrate:%d; "
 		"portstate:%x; devicetype:%x\n",
@@ -2978,6 +2979,7 @@ hw_event_sata_phy_up(struct pm8001_hba_info *pm8001_ha, void *piomb)
 				port_id, phy_id, link_rate, portstate));
 
 	port->port_state = portstate;
+	phy->phy_state = PHY_STATE_LINK_UP_SPCV;
 	port->port_attached = 1;
 	pm8001_get_lrate_mode(phy, link_rate);
 	phy->phy_type |= PORT_TYPE_SATA;
diff --git a/drivers/scsi/pm8001/pm80xx_hwi.h b/drivers/scsi/pm8001/pm80xx_hwi.h
index c86816bea424..9970a385795d 100644
--- a/drivers/scsi/pm8001/pm80xx_hwi.h
+++ b/drivers/scsi/pm8001/pm80xx_hwi.h
@@ -215,6 +215,8 @@
 #define SAS_DOPNRJT_RTRY_TMO            128
 #define SAS_COPNRJT_RTRY_TMO            128
 
+/* for phy state */
+#define PHY_STATE_LINK_UP_SPCV		0x2
 /*
   Making ORR bigger than IT NEXUS LOSS which is 2000000us = 2 second.
   Assuming a bigger value 3 second, 3000000/128 = 23437.5 where 128