aboutsummaryrefslogtreecommitdiffstats
path: root/include
diff options
context:
space:
mode:
authorTejun Heo <tj@kernel.org>2010-04-05 10:33:13 +0900
committerJeff Garzik <jgarzik@redhat.com>2010-04-06 10:55:33 -0400
commit445d211b0da4e9a6e6d576edff85085c2aaf53df (patch)
tree039ade5b49cb0bbd388babc369f28f541c76ec96 /include
parent68b0ddb289220b6d4d865be128939663be34959d (diff)
downloadmrst-s0i3-test-445d211b0da4e9a6e6d576edff85085c2aaf53df.tar.gz
mrst-s0i3-test-445d211b0da4e9a6e6d576edff85085c2aaf53df.tar.xz
mrst-s0i3-test-445d211b0da4e9a6e6d576edff85085c2aaf53df.zip
libata: unlock HPA if device shrunk
Some BIOSes don't configure HPA during boot but do so while resuming. This causes harddrives to shrink during resume making libata detach and reattach them. This can be worked around by unlocking HPA if old size equals native size. Add ATA_DFLAG_UNLOCK_HPA so that HPA unlocking can be controlled per-device and update ata_dev_revalidate() such that it sets ATA_DFLAG_UNLOCK_HPA and fails with -EIO when the above condition is detected. This patch fixes the following bug. https://bugzilla.kernel.org/show_bug.cgi?id=15396 Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Oleksandr Yermolenko <yaa.bta@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/libata.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h
index f8ea71e6d0e..b2f2003b92e 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -146,6 +146,7 @@ enum {
ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */
ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */
ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */
+ ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */
ATA_DFLAG_INIT_MASK = (1 << 24) - 1,
ATA_DFLAG_DETACH = (1 << 24),