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| author | Martin K. Petersen <martin.petersen@oracle.com> | 2019-03-27 19:11:52 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-03-28 04:21:38 +0300 |
| commit | 1d5de5bd311be7cd54f02f7cd164f0349a75c876 (patch) | |
| tree | 608d191867c9dbaa788f5578c8ae8dc259df4887 /drivers | |
| parent | c14a57264399efd39514a2329c591a4b954246d8 (diff) | |
| download | linux-1d5de5bd311be7cd54f02f7cd164f0349a75c876.tar.xz | |
scsi: sd: Quiesce warning if device does not report optimal I/O size
Commit a83da8a4509d ("scsi: sd: Optimal I/O size should be a multiple
of physical block size") split one conditional into several separate
statements in an effort to provide more accurate warning messages when
a device reports a nonsensical value. However, this reorganization
accidentally dropped the precondition of the reported value being
larger than zero. This lead to a warning getting emitted on devices
that do not report an optimal I/O size at all.
Remain silent if a device does not report an optimal I/O size.
Fixes: a83da8a4509d ("scsi: sd: Optimal I/O size should be a multiple of physical block size")
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: <stable@vger.kernel.org>
Reported-by: Hussam Al-Tayeb <ht990332@gmx.com>
Tested-by: Hussam Al-Tayeb <ht990332@gmx.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/sd.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 3ffa34dc2fd5..2b2bc4b49d78 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -3071,6 +3071,9 @@ static bool sd_validate_opt_xfer_size(struct scsi_disk *sdkp, unsigned int opt_xfer_bytes = logical_to_bytes(sdp, sdkp->opt_xfer_blocks); + if (sdkp->opt_xfer_blocks == 0) + return false; + if (sdkp->opt_xfer_blocks > dev_max) { sd_first_printk(KERN_WARNING, sdkp, "Optimal transfer size %u logical blocks " \ |