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authorNamjae Jeon <namjae.jeon@samsung.com>2012-07-07 23:05:08 -0400
committerJames Bottomley <JBottomley@Parallels.com>2012-07-20 08:59:00 +0100
commitb81478d82e389dd0961760f5ff6f56b50d29db6d (patch)
tree28729e5443db79591b693dea481b23d5511f37d1 /include/scsi
parent365a7150094114a0f8ef0b6164e6b04b519039e8 (diff)
downloadlinux-linaro-stable-b81478d82e389dd0961760f5ff6f56b50d29db6d.tar.gz
[SCSI] set to WCE if usb cache quirk is present.
Make use of USB quirk method to identify such HDD while reading the cache status in sd_probe(). If cache quirk is present for the HDD, lets assume that cache is enabled and make WCE bit equal to 1. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Pankaj Kumar <pankaj.km@samsung.com> Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'include/scsi')
-rw-r--r--include/scsi/scsi_device.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index bd1a14d89009..7539f52a33c9 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -154,6 +154,7 @@ struct scsi_device {
unsigned no_read_capacity_16:1; /* Avoid READ_CAPACITY_16 cmds */
unsigned try_rc_10_first:1; /* Try READ_CAPACACITY_10 first */
unsigned is_visible:1; /* is the device visible in sysfs */
+ unsigned wce_default_on:1; /* Cache is ON by default */
DECLARE_BITMAP(supported_events, SDEV_EVT_MAXBITS); /* supported events */
struct list_head event_list; /* asserted events */