From d211f052fa58a053639bc51501cb64421157d362 Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Wed, 6 Aug 2008 18:21:18 +0100 Subject: [PATCH] [SCSI] sd: fix USB devices incorrectly reporting DIF support Some USB devices set the protect bit in the INQUIRY data which currently causes the DIF code in sd to assume (incorrectly) that they support READ_CAPACITY(16). Fix this (only for the time being) by making sure we only believe the protect bit in the inquiry data if the device claims conformance to SCSI-3 or above. Acked-by: Martin K. Petersen Signed-off-by: James Bottomley --- include/scsi/scsi_device.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h index 291d56a1916..80b2e93c293 100644 --- a/include/scsi/scsi_device.h +++ b/include/scsi/scsi_device.h @@ -6,6 +6,7 @@ #include #include #include +#include #include struct request_queue; @@ -426,7 +427,7 @@ static inline int scsi_device_enclosure(struct scsi_device *sdev) static inline int scsi_device_protection(struct scsi_device *sdev) { - return sdev->inquiry[5] & (1<<0); + return sdev->scsi_level > SCSI_2 && sdev->inquiry[5] & (1<<0); } #define MODULE_ALIAS_SCSI_DEVICE(type) \ -- 2.41.1