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authorDouglas Gilbert <dgilbert@interlog.com>2010-01-03 13:51:15 -0500
committerJames Bottomley <James.Bottomley@suse.de>2010-01-18 10:48:16 -0600
commite7efe5932b1d3916c79326a4221693ea90a900e2 (patch)
tree37bee69043455a48a940ec9989b8e588d09cc245 /drivers/scsi/scsi_lib.c
parent5d7ebb9c7a04d29efce1099024944dfd94d9f63c (diff)
[SCSI] skip sense logging for some ATA PASS-THROUGH cdbs
Further to the lsml thread titled: "does scsi_io_completion need to dump sense data for ata pass through (ck_cond = 1) ?" This is a patch to skip logging when the sense data is associated with a SENSE_KEY of "RECOVERED_ERROR" and the additional sense code is "ATA PASS-THROUGH INFORMATION AVAILABLE". This only occurs with the SAT ATA PASS-THROUGH commands when CK_COND=1 (in the cdb). It indicates that the sense data contains ATA registers. Smartmontools uses such commands on ATA disks connected via SAT. Periodic checks such as those done by smartd cause nuisance entries into logs that are: - neither errors nor warnings - pointless unless the cdb that caused them are also logged Signed-off-by: Douglas Gilbert <dgilbert@interlog.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/scsi_lib.c')
-rw-r--r--drivers/scsi/scsi_lib.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index c6642423cc6..56977097de9 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -773,8 +773,14 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
* we already took a copy of the original into rq->errors which
* is what gets returned to the user
*/
- if (sense_valid && sshdr.sense_key == RECOVERED_ERROR) {
- if (!(req->cmd_flags & REQ_QUIET))
+ if (sense_valid && (sshdr.sense_key == RECOVERED_ERROR)) {
+ /* if ATA PASS-THROUGH INFORMATION AVAILABLE skip
+ * print since caller wants ATA registers. Only occurs on
+ * SCSI ATA PASS_THROUGH commands when CK_COND=1
+ */
+ if ((sshdr.asc == 0x0) && (sshdr.ascq == 0x1d))
+ ;
+ else if (!(req->cmd_flags & REQ_QUIET))
scsi_print_sense("", cmd);
result = 0;
/* BLOCK_PC may have set error */