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authorHannes Reinecke <hare@suse.de>2018-01-10 09:34:02 +0100
committerMartin K. Petersen <martin.petersen@oracle.com>2018-01-10 16:45:04 -0500
commitc9f926000fe3b84135a81602a9f7e63a6a7898e2 (patch)
tree5f39bcf28aed2b9184c4c215ff4d97f67159264f
parentd1b8b2391c24751e44f618fcf86fb55d9a9247fd (diff)
scsi: libsas: Disable asynchronous aborts for SATA devices
Handling CD-ROM devices from libsas is decidedly odd, as libata relies on SCSI EH to be started to figure out that no medium is present. So we cannot do asynchronous aborts for SATA devices. Fixes: 909657615d9 ("scsi: libsas: allow async aborts") Cc: <stable@vger.kernel.org> # 4.12+ Signed-off-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Tested-by: Yves-Alexis Perez <corsac@debian.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
-rw-r--r--drivers/scsi/libsas/sas_scsi_host.c17
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
index 91795eb56206..eea94aa4091c 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -486,15 +486,28 @@ static int sas_queue_reset(struct domain_device *dev, int reset_type,
int sas_eh_abort_handler(struct scsi_cmnd *cmd)
{
- int res;
+ int res = TMF_RESP_FUNC_FAILED;
struct sas_task *task = TO_SAS_TASK(cmd);
struct Scsi_Host *host = cmd->device->host;
+ struct domain_device *dev = cmd_to_domain_dev(cmd);
struct sas_internal *i = to_sas_internal(host->transportt);
+ unsigned long flags;
if (!i->dft->lldd_abort_task)
return FAILED;
- res = i->dft->lldd_abort_task(task);
+ spin_lock_irqsave(host->host_lock, flags);
+ /* We cannot do async aborts for SATA devices */
+ if (dev_is_sata(dev) && !host->host_eh_scheduled) {
+ spin_unlock_irqrestore(host->host_lock, flags);
+ return FAILED;
+ }
+ spin_unlock_irqrestore(host->host_lock, flags);
+
+ if (task)
+ res = i->dft->lldd_abort_task(task);
+ else
+ SAS_DPRINTK("no task to abort\n");
if (res == TMF_RESP_FUNC_SUCC || res == TMF_RESP_FUNC_COMPLETE)
return SUCCESS;

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