>>>>> "Tarkan" == Tarkan Erimer <tarkan.erimer@xxxxxxxxxxxxxx> writes: Tarkan> root@tarkane:~# sg_inq -e /dev/sdb Tarkan> VPD INQUIRY: extended INQUIRY data page Tarkan> inquiry: transport: Host_status=0x05 [DID_ABORT] Tarkan> Driver_status=0x00 [DRIVER_OK, SUGGEST_OK] Tarkan> inquiry: failed, res=-1 *sigh* sd: Avoid sending extended inquiry to legacy/broken devices Our existing check for VPD page validity does not handle devices that refuse to respond to INQUIRY with the EVPD bit set. Restrict extended inquiry to devices reporting SBC2/SPC3 or higher. Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> --- diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 5616cd7..9b703fd 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -1840,6 +1840,13 @@ static void sd_read_block_characteristics(struct scsi_disk *sdkp) kfree(buffer); } +static int sd_try_extended_inquiry(struct scsi_device *sdp) +{ + if (sdp->scsi_level > SCSI_SPC_2) + return 1; + return 0; +} + /** * sd_revalidate_disk - called the first time a new disk is seen, * performs disk spin up, read_capacity, etc. @@ -1877,8 +1884,12 @@ static int sd_revalidate_disk(struct gendisk *disk) */ if (sdkp->media_present) { sd_read_capacity(sdkp, buffer); - sd_read_block_limits(sdkp); - sd_read_block_characteristics(sdkp); + + if (sd_try_extended_inquiry(sdp)) { + sd_read_block_limits(sdkp); + sd_read_block_characteristics(sdkp); + } + sd_read_write_protect_flag(sdkp, buffer); sd_read_cache_type(sdkp, buffer); sd_read_app_tag_own(sdkp, buffer); -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html