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| author | Stefan Weinhuber <wein@de.ibm.com> | 2011-04-20 10:15:35 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2011-04-20 10:15:44 +0200 |
| commit | c7a29e56f0a3526b71e9694b403b8e2cbe9c31e5 (patch) | |
| tree | 5ff321fdec6bdaff9e1d58a38df2fdef2c28324b /drivers | |
| parent | e35c76cd47c244eaa7a74adaabde4d0a1cadb907 (diff) | |
| download | linux-c7a29e56f0a3526b71e9694b403b8e2cbe9c31e5.tar.bz2 | |
[S390] dasd: check sense type in device change handler
When evaluating sense data in dasd_eckd_check_for_device_change, we
must always check for the type of sense data in byte 27, bit 0, to
make sure that the rest of the sense data is interpreted correctly.
Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/s390/block/dasd_eckd.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index db8005d9f2fd..3ebdf5f92f8f 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -2037,7 +2037,7 @@ static void dasd_eckd_check_for_device_change(struct dasd_device *device, return; /* summary unit check */ - if ((sense[7] == 0x0D) && + if ((sense[27] & DASD_SENSE_BIT_0) && (sense[7] == 0x0D) && (scsw_dstat(&irb->scsw) & DEV_STAT_UNIT_CHECK)) { dasd_alias_handle_summary_unit_check(device, irb); return; @@ -2053,7 +2053,8 @@ static void dasd_eckd_check_for_device_change(struct dasd_device *device, /* loss of device reservation is handled via base devices only * as alias devices may be used with several bases */ - if (device->block && (sense[7] == 0x3F) && + if (device->block && (sense[27] & DASD_SENSE_BIT_0) && + (sense[7] == 0x3F) && (scsw_dstat(&irb->scsw) & DEV_STAT_UNIT_CHECK) && test_bit(DASD_FLAG_IS_RESERVED, &device->flags)) { if (device->features & DASD_FEATURE_FAILONSLCK) |