From: Stefan Weinhuber Date: Wed, 20 Apr 2011 08:15:35 +0000 (+0200) Subject: [S390] dasd: check sense type in device change handler X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c7a29e56f0a3526b71e9694b403b8e2cbe9c31e5;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git [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 Signed-off-by: Martin Schwidefsky --- 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)