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authorDan Williams <dan.j.williams@intel.com>2015-01-17 02:13:02 +0300
committerTejun Heo <tj@kernel.org>2015-01-19 17:10:07 +0300
commit72dd299d5039a336493993dcc63413cf31d0e662 (patch)
tree0fff3d311e7afa17c0b46cb8b19024c64086b2ce /include/linux/libata.h
parent19406d7d9512254d1a467997101bb77b090a44be (diff)
downloadlinux-72dd299d5039a336493993dcc63413cf31d0e662.tar.xz
libata: allow sata_sil24 to opt-out of tag ordered submission
Ronny reports: https://bugzilla.kernel.org/show_bug.cgi?id=87101 "Since commit 8a4aeec8d "libata/ahci: accommodate tag ordered controllers" the access to the harddisk on the first SATA-port is failing on its first access. The access to the harddisk on the second port is working normal. When reverting the above commit, access to both harddisks is working fine again." Maintain tag ordered submission as the default, but allow sata_sil24 to continue with the old behavior. Cc: <stable@vger.kernel.org> Cc: Tejun Heo <tj@kernel.org> Reported-by: Ronny Hegewald <Ronny.Hegewald@online.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'include/linux/libata.h')
-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 f2b440e44fd7..91f705de2c0b 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -231,6 +231,7 @@ enum {
ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity
* led */
ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */
+ ATA_FLAG_LOWTAG = (1 << 24), /* host wants lowest available tag */
/* bits 24:31 of ap->flags are reserved for LLD specific flags */