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| author | Dan Williams <dan.j.williams@intel.com> | 2015-01-16 15:13:02 -0800 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2015-02-20 00:49:38 +0000 |
| commit | 4396fd99269a61e4bde4c7ece01df1e3a26c4319 (patch) | |
| tree | 153f2b9093572602e93cedf6dfe1a36a417bd371 /include/linux | |
| parent | 370a4f547f72b442c8402b8aff95844f7162b230 (diff) | |
| download | lwn-4396fd99269a61e4bde4c7ece01df1e3a26c4319.tar.gz lwn-4396fd99269a61e4bde4c7ece01df1e3a26c4319.zip | |
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>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/libata.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h index d773b2143b69..42ac6ad8a69a 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -207,6 +207,7 @@ 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 */ |