This is a note to let you know that I've just added the patch titled
SCSI: libsas: fix usage of ata_tf_to_fis
to the 3.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
scsi-libsas-fix-usage-of-ata_tf_to_fis.patch
and it can be found in the queue-3.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ae5fbae0ccd982dfca0ce363036ed92f5b13f150 Mon Sep 17 00:00:00 2001
From: Dan Williams <dan.j.williams@xxxxxxxxx>
Date: Tue, 22 Oct 2013 18:35:19 -0700
Subject: SCSI: libsas: fix usage of ata_tf_to_fis
From: Dan Williams <dan.j.williams@xxxxxxxxx>
commit ae5fbae0ccd982dfca0ce363036ed92f5b13f150 upstream.
Since commit 110dd8f19df5 "[SCSI] libsas: fix scr_read/write users and
update the libata documentation" we have been passing pmp=1 and is_cmd=0
to ata_tf_to_fis(). Praveen reports that eSATA attached drives do not
discover correctly. His investigation found that the BIOS was passing
pmp=0 while Linux was passing pmp=1 and failing to discover the drives.
Update libsas to follow the libata example of pulling the pmp setting
from the ata_link and correct is_cmd to be 1 since all tf's submitted
through ->qc_issue are commands. Presumably libsas lldds do not care
about is_cmd as they have sideband mechanisms to perform link
management.
http://marc.info/?l=linux-scsi&m=138179681726990
[jejb: checkpatch fix]
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Reported-by: Praveen Murali <pmurali@xxxxxxxxxxxx>
Tested-by: Praveen Murali <pmurali@xxxxxxxxxxxx>
Signed-off-by: James Bottomley <JBottomley@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/scsi/libsas/sas_ata.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -211,7 +211,7 @@ static unsigned int sas_ata_qc_issue(str
qc->tf.nsect = 0;
}
- ata_tf_to_fis(&qc->tf, 1, 0, (u8*)&task->ata_task.fis);
+ ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, (u8 *)&task->ata_task.fis);
task->uldd_task = qc;
if (ata_is_atapi(qc->tf.protocol)) {
memcpy(task->ata_task.atapi_packet, qc->cdb, qc->dev->cdb_len);
Patches currently in stable-queue which might be from dan.j.williams@xxxxxxxxx are
queue-3.12/scsi-libsas-fix-usage-of-ata_tf_to_fis.patch
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