diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-09-27 09:58:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-09-27 09:58:02 -0700 |
| commit | 633b47cb009d09dc8f4ba9cdb3a0ca138809c7c7 (patch) | |
| tree | 12eac99049a12e2fb6942c445d9c63a4a06bc217 /drivers/scsi/scsi.c | |
| parent | b6cd17050bc0817c79924f23716198b2e935556e (diff) | |
| parent | 2132df16f53b4f01ab25f5d404f36a22244ae342 (diff) | |
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"A single fix for libata: older devices don't support command duration
limits (CDL) and some don't support report opcodes, meaning there's no
way to tell if they support the command or not.
Reduce the problems of incorrectly using CDL commands on older devices
by checking SCSI spec compliance at SPC-5 (the spec which introduced
the command) before turning on CDL"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: core: ata: Do no try to probe for CDL on old drives
Diffstat (limited to 'drivers/scsi/scsi.c')
| -rw-r--r-- | drivers/scsi/scsi.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index d0911bc28663..89367c4bf0ef 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -613,6 +613,17 @@ void scsi_cdl_check(struct scsi_device *sdev) bool cdl_supported; unsigned char *buf; + /* + * Support for CDL was defined in SPC-5. Ignore devices reporting an + * lower SPC version. This also avoids problems with old drives choking + * on MAINTENANCE_IN / MI_REPORT_SUPPORTED_OPERATION_CODES with a + * service action specified, as done in scsi_cdl_check_cmd(). + */ + if (sdev->scsi_level < SCSI_SPC_5) { + sdev->cdl_supported = 0; + return; + } + buf = kmalloc(SCSI_CDL_CHECK_BUF_LEN, GFP_KERNEL); if (!buf) { sdev->cdl_supported = 0; |