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scsi: do not issue SCSI RSOC command to Promise Vtrak E610f 

commit 0213436a2c upstream.

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>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Janusz Dziemidowicz 2014-07-24 15:48:46 +02:00 committed by Greg Kroah-Hartman
parent d1988d080f
commit aeed424c53
3 changed files with 9 additions and 0 deletions
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1
drivers/scsi/scsi_devinfo.c
View File

@ -222,6 +222,7 @@ static struct {
{"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
{"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
{"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
{"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC},
{"Promise", "", NULL, BLIST_SPARSELUN},
{"QUANTUM", "XP34301", "1071", BLIST_NOTQ},
{"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},

6
drivers/scsi/scsi_scan.c
View File

@ -922,6 +922,12 @@ 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);

2
include/scsi/scsi_devinfo.h
View File

@ -35,4 +35,6 @@
#define BLIST_SCSI3LUN 0x8000000 /* Scan more than 256 LUNs
for sequential scan */
#define BLIST_TRY_VPD_PAGES 0x10000000 /* Attempt to read VPD pages */
#define BLIST_NO_RSOC 0x20000000 /* don't try to issue RSOC */
#endif