[GIT PULL] SCSI fixes for 6.11-rc2

[James Bottomley <James.Bottomley@HansenPartnership.com>]

Two core fixes: one to prevent discard type changes (seen on iSCSI)
during intermittent errors and the other is fixing a lockdep problem
caused by the queue limits change. One driver fix in ufs.

The patch is available here:

git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git scsi-fixes

The short changelog is:

Li Feng (1):
      scsi: sd: Keep the discard mode stable

Shin'ichiro Kawasaki (1):
      scsi: sd: Move sd_read_cpr() out of the q->limits_lock region

Vamshi Gajjela (1):
      scsi: ufs: core: Fix hba->last_dme_cmd_tstamp timestamp updating logic

And the diffstat:

 drivers/scsi/sd.c         | 15 ++++++++++-----
 drivers/ufs/core/ufshcd.c | 11 ++++++++---
 2 files changed, 18 insertions(+), 8 deletions(-)

With full diff below.

James

---

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 8bb3a3611851..699f4f9674d9 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -2711,8 +2711,6 @@ static int read_capacity_16(struct scsi_disk *sdkp, struct scsi_device *sdp,
 
 		if (buffer[14] & 0x40) /* LBPRZ */
 			sdkp->lbprz = 1;
-
-		sd_config_discard(sdkp, lim, SD_LBP_WS16);
 	}
 
 	sdkp->capacity = lba + 1;
@@ -3365,8 +3363,6 @@ static void sd_read_block_limits(struct scsi_disk *sdkp,
 			sdkp->unmap_alignment =
 				get_unaligned_be32(&vpd->data[32]) & ~(1 << 31);
 
-		sd_config_discard(sdkp, lim, sd_discard_mode(sdkp));
-
 config_atomic:
 		sdkp->max_atomic = get_unaligned_be32(&vpd->data[44]);
 		sdkp->atomic_alignment = get_unaligned_be32(&vpd->data[48]);
@@ -3753,9 +3749,10 @@ static int sd_revalidate_disk(struct gendisk *disk)
 			sd_read_block_limits_ext(sdkp);
 			sd_read_block_characteristics(sdkp, &lim);
 			sd_zbc_read_zones(sdkp, &lim, buffer);
-			sd_read_cpr(sdkp);
 		}
 
+		sd_config_discard(sdkp, &lim, sd_discard_mode(sdkp));
+
 		sd_print_capacity(sdkp, old_capacity);
 
 		sd_read_write_protect_flag(sdkp, buffer);
@@ -3808,6 +3805,14 @@ static int sd_revalidate_disk(struct gendisk *disk)
 	if (err)
 		return err;
 
+	/*
+	 * Query concurrent positioning ranges after
+	 * queue_limits_commit_update() unlocked q->limits_lock to avoid
+	 * deadlock with q->sysfs_dir_lock and q->sysfs_lock.
+	 */
+	if (sdkp->media_present && scsi_device_supports_vpd(sdp))
+		sd_read_cpr(sdkp);
+
 	/*
 	 * For a zoned drive, revalidating the zones can be done only once
 	 * the gendisk capacity is set. So if this fails, set back the gendisk
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 5e3c67e96956..0b3d0c8e0dda 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -4100,11 +4100,16 @@ static inline void ufshcd_add_delay_before_dme_cmd(struct ufs_hba *hba)
 			min_sleep_time_us =
 				MIN_DELAY_BEFORE_DME_CMDS_US - delta;
 		else
-			return; /* no more delay required */
+			min_sleep_time_us = 0; /* no more delay required */
 	}
 
-	/* allow sleep for extra 50us if needed */
-	usleep_range(min_sleep_time_us, min_sleep_time_us + 50);
+	if (min_sleep_time_us > 0) {
+		/* allow sleep for extra 50us if needed */
+		usleep_range(min_sleep_time_us, min_sleep_time_us + 50);
+	}
+
+	/* update the last_dme_cmd_tstamp */
+	hba->last_dme_cmd_tstamp = ktime_get();
 }
 
 /**