From: Oliver Neukum <oneukum@suse.de>
Subject: fix medium presence misdetection in usb storage device 
References: bnc#362850
Patch-mainline: not yet

From reading the SCSI spec it seems that having the valid bit 0 (0x70
checked in scsi_sense_valid) should does not invalidate the ASC or ASQ.
[See page 37 of spc4r02.pdf].  It should only invalidate the INFORMATION
field. Therefore remove the sense_valid check from the USB quirk.

Signed-off-by: Brandon Philips <bphilips@suse.de>

---
 drivers/scsi/sd.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1390,8 +1390,7 @@ sd_spinup_disk(struct scsi_disk *sdkp)
 		 * Yes, this sense key/ASC combination shouldn't
 		 * occur here.  It's characteristic of these devices.
 		 */
-		} else if (sense_valid &&
-				sshdr.sense_key == UNIT_ATTENTION &&
+		} else if (sshdr.sense_key == UNIT_ATTENTION &&
 				sshdr.asc == 0x28) {
 			if (!spintime) {
 				spintime_expire = jiffies + 5 * HZ;