libata: allow sata_sil24 to opt-out of tag ordered submission
authorDan Williams <dan.j.williams@intel.com>
Fri, 16 Jan 2015 23:13:02 +0000 (15:13 -0800)
committerBen Hutchings <ben@decadent.org.uk>
Fri, 20 Feb 2015 00:49:38 +0000 (00:49 +0000)
commit4396fd99269a61e4bde4c7ece01df1e3a26c4319
tree153f2b9093572602e93cedf6dfe1a36a417bd371
parent370a4f547f72b442c8402b8aff95844f7162b230
libata: allow sata_sil24 to opt-out of tag ordered submission

commit 72dd299d5039a336493993dcc63413cf31d0e662 upstream.

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: 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>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
drivers/ata/libata-core.c
drivers/ata/sata_sil24.c
include/linux/libata.h