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authorJanusz Dziemidowicz <rraptorr@nails.eu.org>2014-07-24 17:48:46 +0400
committerChristoph Hellwig <hch@lst.de>2014-07-30 02:01:10 +0400
commit0213436a2cc5e4a5ca2fabfaa4d3877097f3b13f (patch)
tree192a6c47135e95d157f406aa610bd4e113d63d08 /drivers/scsi/scsi_scan.c
parent884ffee01ddde5af260c7a5d1359c658aa1f0a11 (diff)
downloadlinux-0213436a2cc5e4a5ca2fabfaa4d3877097f3b13f.tar.xz
scsi: do not issue SCSI RSOC command to Promise Vtrak E610f
Some devices don't like REPORT SUPPORTED OPERATION CODES and will simply timeout causing sd_mod init to take a very very long time. Introduce BLIST_NO_RSOC scsi scan flag, that stops RSOC from being issued. Add it to Promise Vtrak E610f entry in scsi scan blacklist. Fixes bug #79901 reported at https://bugzilla.kernel.org/show_bug.cgi?id=79901 Fixes: 98dcc2946adb ("SCSI: sd: Update WRITE SAME heuristics") Signed-off-by: Janusz Dziemidowicz <rraptorr@nails.eu.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Cc: stable@vger.kernel.org Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi/scsi_scan.c')
-rw-r--r--drivers/scsi/scsi_scan.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 50536cd6b3f2..56675dbbf681 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -900,6 +900,12 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
if (*bflags & BLIST_USE_10_BYTE_MS)
sdev->use_10_for_ms = 1;
+ /* some devices don't like REPORT SUPPORTED OPERATION CODES
+ * and will simply timeout causing sd_mod init to take a very
+ * very long time */
+ if (*bflags & BLIST_NO_RSOC)
+ sdev->no_report_opcodes = 1;
+
/* set the device running here so that slave configure
* may do I/O */
ret = scsi_device_set_state(sdev, SDEV_RUNNING);