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isci: fix ata locking 

Upstream commit a29b5dad "libata: fix locking for sas paths" switched
libsas ata locking to the ata_host lock.  We need to do the same when
returning ata tasks from the execute path.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2011-05-05 17:47:44 -07:00
parent 8694e79287
commit 5b3f2bd877
1 changed files with 13 additions and 13 deletions
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26
drivers/scsi/isci/task.h
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@ -344,26 +344,26 @@ isci_task_set_completion_status(
* @status: This parameter is the status code for the completed task.
*
*/
static inline void isci_execpath_callback(
struct isci_host *ihost,
struct sas_task *task,
void (*func)(struct sas_task *))
static inline void isci_execpath_callback(struct isci_host *ihost,
struct sas_task *task,
void (*func)(struct sas_task *))
{
unsigned long flags;
struct domain_device *dev = task->dev;
if (dev_is_sata(dev) && task->uldd_task) {
unsigned long flags;
if (dev_is_sata(task->dev) && task->uldd_task) {
/* Since we are still in the submit path, and since
* libsas takes the host lock on behalf of SATA
* devices before I/O starts (in the non-discovery case),
* we need to unlock before we can call the callback function.
*/
* libsas takes the host lock on behalf of SATA
* devices before I/O starts (in the non-discovery case),
* we need to unlock before we can call the callback function.
*/
raw_local_irq_save(flags);
spin_unlock(ihost->shost->host_lock);
spin_unlock(dev->sata_dev.ap->lock);
func(task);
spin_lock(ihost->shost->host_lock);
spin_lock(dev->sata_dev.ap->lock);
raw_local_irq_restore(flags);
} else
func(task);
}
#endif /* !defined(_SCI_TASK_H_) */