Merge branch '5.12/scsi-fixes' into 5.13/scsi-staging

Pull 5.12/scsi-fixes into the 5.13 SCSI tree to provide a baseline for
some UFS changes that would otherwise cause conflicts during the
merge.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

1 files changed, 13 insertions, 28 deletions

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 8ca8ceb9c145..acc6356d9d43 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -94,8 +94,6 @@
 		       16, 4, buf, __len, false);                        \
 } while (0)
 
-static bool early_suspend;
-
 int ufshcd_dump_regs(struct ufs_hba *hba, size_t offset, size_t len,
 		     const char *prefix)
 {
@@ -1526,7 +1524,7 @@ static ssize_t ufshcd_clkscale_enable_show(struct device *dev,
 {
 	struct ufs_hba *hba = dev_get_drvdata(dev);
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", hba->clk_scaling.is_enabled);
+	return sysfs_emit(buf, "%d\n", hba->clk_scaling.is_enabled);
 }
 
 static ssize_t ufshcd_clkscale_enable_store(struct device *dev,
@@ -4976,6 +4974,7 @@ ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
 			 * UFS device needs urgent BKOPs.
 			 */
 			if (!hba->pm_op_in_progress &&
+			    !ufshcd_eh_in_progress(hba) &&
 			    ufshcd_is_exception_event(lrbp->ucd_rsp_ptr) &&
 			    schedule_work(&hba->eeh_work)) {
 				/*
@@ -5777,13 +5776,20 @@ static void ufshcd_err_handling_prepare(struct ufs_hba *hba)
 			ufshcd_suspend_clkscaling(hba);
 		ufshcd_clk_scaling_allow(hba, false);
 	}
+	ufshcd_scsi_block_requests(hba);
+	/* Drain ufshcd_queuecommand() */
+	down_write(&hba->clk_scaling_lock);
+	up_write(&hba->clk_scaling_lock);
+	cancel_work_sync(&hba->eeh_work);
 }
 
 static void ufshcd_err_handling_unprepare(struct ufs_hba *hba)
 {
+	ufshcd_scsi_unblock_requests(hba);
 	ufshcd_release(hba);
 	if (ufshcd_is_clkscaling_supported(hba))
 		ufshcd_clk_scaling_suspend(hba, false);
+	ufshcd_clear_ua_wluns(hba);
 	pm_runtime_put(hba->dev);
 }
 
@@ -5875,8 +5881,8 @@ static void ufshcd_err_handler(struct work_struct *work)
 	spin_unlock_irqrestore(hba->host->host_lock, flags);
 	ufshcd_err_handling_prepare(hba);
 	spin_lock_irqsave(hba->host->host_lock, flags);
-	ufshcd_scsi_block_requests(hba);
-	hba->ufshcd_state = UFSHCD_STATE_RESET;
+	if (hba->ufshcd_state != UFSHCD_STATE_ERROR)
+		hba->ufshcd_state = UFSHCD_STATE_RESET;
 
 	/* Complete requests that have door-bell cleared by h/w */
 	ufshcd_complete_requests(hba);
@@ -6035,12 +6041,8 @@ skip_err_handling:
 	}
 	ufshcd_clear_eh_in_progress(hba);
 	spin_unlock_irqrestore(hba->host->host_lock, flags);
-	ufshcd_scsi_unblock_requests(hba);
 	ufshcd_err_handling_unprepare(hba);
 	up(&hba->host_sem);
-
-	if (!err && needs_reset)
-		ufshcd_clear_ua_wluns(hba);
 }
 
 /**
@@ -7846,6 +7848,8 @@ static int ufshcd_probe_hba(struct ufs_hba *hba, bool async)
 	unsigned long flags;
 	ktime_t start = ktime_get();
 
+	hba->ufshcd_state = UFSHCD_STATE_RESET;
+
 	ret = ufshcd_link_startup(hba);
 	if (ret)
 		goto out;
@@ -8965,11 +8969,6 @@ int ufshcd_system_suspend(struct ufs_hba *hba)
 	int ret = 0;
 	ktime_t start = ktime_get();
 
-	if (!hba) {
-		early_suspend = true;
-		return 0;
-	}
-
 	down(&hba->host_sem);
 
 	if (!hba->is_powered)
@@ -9021,14 +9020,6 @@ int ufshcd_system_resume(struct ufs_hba *hba)
 	int ret = 0;
 	ktime_t start = ktime_get();
 
-	if (!hba)
-		return -EINVAL;
-
-	if (unlikely(early_suspend)) {
-		early_suspend = false;
-		down(&hba->host_sem);
-	}
-
 	if (!hba->is_powered || pm_runtime_suspended(hba->dev))
 		/*
 		 * Let the runtime resume take care of resuming
@@ -9061,9 +9052,6 @@ int ufshcd_runtime_suspend(struct ufs_hba *hba)
 	int ret = 0;
 	ktime_t start = ktime_get();
 
-	if (!hba)
-		return -EINVAL;
-
 	if (!hba->is_powered)
 		goto out;
 	else
@@ -9102,9 +9090,6 @@ int ufshcd_runtime_resume(struct ufs_hba *hba)
 	int ret = 0;
 	ktime_t start = ktime_get();
 
-	if (!hba)
-		return -EINVAL;
-
 	if (!hba->is_powered)
 		goto out;
 	else