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[SCSI] sas_ata: sas_ata_qc_issue should return AC_ERR_* 

The sas_ata_qc_issue function was incorrectly written to return error
codes such as -ENOMEM.  Since libata OR's qc->err_mask with the
return value, It is necessary to make my code return one of the
AC_ERR_ codes instead.  For now, use AC_ERR_SYSTEM because an error
here means that the OS couldn't send the command to the controller.

If anybody has a suggestion for a better AC_ERR_ code to use, please
suggest it.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Darrick J. Wong 2007-01-30 01:18:38 -08:00 committed by James Bottomley
parent 3eb7a51a3a
commit 35a7f2f698
1 changed files with 4 additions and 6 deletions
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10
drivers/scsi/libsas/sas_ata.c
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@ -123,7 +123,7 @@ static void sas_ata_task_done(struct sas_task *task)
static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc)
{
int res = -ENOMEM;
int res;
struct sas_task *task;
struct domain_device *dev = qc->ap->private_data;
struct sas_ha_struct *sas_ha = dev->port->ha;
@ -135,7 +135,7 @@ static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc)
task = sas_alloc_task(GFP_ATOMIC);
if (!task)
goto out;
return AC_ERR_SYSTEM;
task->dev = dev;
task->task_proto = SAS_PROTOCOL_STP;
task->task_done = sas_ata_task_done;
@ -187,12 +187,10 @@ static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc)
SAS_DPRINTK("lldd_execute_task returned: %d\n", res);
sas_free_task(task);
if (res == -SAS_QUEUE_FULL)
return -ENOMEM;
return AC_ERR_SYSTEM;
}
out:
return res;
return 0;
}
static u8 sas_ata_check_status(struct ata_port *ap)