The scsi disk message "Starting disk" to signal resuming of a suspended
disk is printed in both sd_resume() and sd_resume_common(), which
results in this message being printed twice when resuming from e.g.
autosuspend:
$ echo 5000 > /sys/block/sda/device/power/autosuspend_delay_ms
$ echo auto > /sys/block/sda/device/power/control
[ 4962.438293] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[ 4962.501121] sd 0:0:0:0: [sda] Stopping disk
$ echo on > /sys/block/sda/device/power/control
[ 4972.805851] sd 0:0:0:0: [sda] Starting disk
[ 4980.558806] sd 0:0:0:0: [sda] Starting disk
Fix this double print by removing the call to sd_printk() from
sd_resume() and moving the call to sd_printk() in sd_resume_common()
earlier in the function, before the check using sd_do_start_stop().
Doing so, the message is printed once regardless if sd_resume_common()
actually executes sd_start_stop_device() (i.e. scsi device case) or not
(libsas and libata managed ATA devices case).
Fixes: 0c76106cb975 ("scsi: sd: Fix TCG OPAL unlock on system resume")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Damien Le Moal <dlemoal@xxxxxxxxxx>
Reviewed-by: Bart Van Assche <bvanassche@xxxxxxx>
---
Changes from v1:
- Fixed typo in commit message
- Added Bart's review tag
drivers/scsi/sd.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 6b64af7d4927..1b7561abe05d 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -4119,8 +4119,6 @@ static int sd_resume(struct device *dev)
{
struct scsi_disk *sdkp = dev_get_drvdata(dev);
- sd_printk(KERN_NOTICE, sdkp, "Starting disk\n");
-
if (opal_unlock_from_suspend(sdkp->opal_dev)) {
sd_printk(KERN_NOTICE, sdkp, "OPAL unlock failed\n");
return -EIO;
@@ -4137,12 +4135,13 @@ static int sd_resume_common(struct device *dev, bool runtime)
if (!sdkp) /* E.g.: runtime resume at the start of sd_probe() */
return 0;
+ sd_printk(KERN_NOTICE, sdkp, "Starting disk\n");
+
if (!sd_do_start_stop(sdkp->device, runtime)) {
sdkp->suspended = false;
return 0;
}
- sd_printk(KERN_NOTICE, sdkp, "Starting disk\n");
ret = sd_start_stop_device(sdkp, 1);
if (!ret) {
sd_resume(dev);
--
2.45.2
