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authorMartin K. Petersen <martin.petersen@oracle.com>2012-09-18 12:19:30 -0400
committerJames Bottomley <JBottomley@Parallels.com>2012-11-13 21:11:31 -0800
commit3c6bdaeab4fda6c9fdd5f3f5c610dea97bddf7d6 (patch)
tree85fad84ab7a257e1da2465711e6af8569934cf7c /drivers/ata/libata-scsi.c
parent49bd665c5407a453736d3232ee58f2906b42e83c (diff)
downloadlinux-3c6bdaeab4fda6c9fdd5f3f5c610dea97bddf7d6.tar.bz2
[SCSI] Add a report opcode helper
The REPORT SUPPORTED OPERATION CODES command can be used to query whether a given opcode is supported by a device. Add a helper function that allows us to look up commands. We only issue RSOC if the device reports compliance with SPC-3 or later. But to err on the side of caution we disable the command for ATA, FireWire and USB. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Acked-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/ata/libata-scsi.c')
-rw-r--r--drivers/ata/libata-scsi.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index e3bda074fa12..7c2dead60518 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -1052,6 +1052,7 @@ static void ata_scsi_sdev_config(struct scsi_device *sdev)
{
sdev->use_10_for_rw = 1;
sdev->use_10_for_ms = 1;
+ sdev->no_report_opcodes = 1;
/* Schedule policy is determined by ->qc_defer() callback and
* it needs to see every deferred qc. Set dev_blocked to 1 to