[libata] Add host lock to struct ata_port
Prepare for changes required to support SATA devices
attached to SAS HBAs. For these devices we don't want to
use host_set at all, since libata will not be the owner
of struct scsi_host.
Signed-off-by: Brian King <brking@us.ibm.com>
(with slight merge modifications made by...)
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/scsi/libata-bmdma.c b/drivers/scsi/libata-bmdma.c
index 13fab97..004e1a0 100644
--- a/drivers/scsi/libata-bmdma.c
+++ b/drivers/scsi/libata-bmdma.c
@@ -715,7 +715,6 @@
ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
ata_postreset_fn_t postreset)
{
- struct ata_host_set *host_set = ap->host_set;
struct ata_eh_context *ehc = &ap->eh_context;
struct ata_queued_cmd *qc;
unsigned long flags;
@@ -726,7 +725,7 @@
qc = NULL;
/* reset PIO HSM and stop DMA engine */
- spin_lock_irqsave(&host_set->lock, flags);
+ spin_lock_irqsave(ap->lock, flags);
ap->hsm_task_state = HSM_ST_IDLE;
@@ -755,7 +754,7 @@
ata_chk_status(ap);
ap->ops->irq_clear(ap);
- spin_unlock_irqrestore(&host_set->lock, flags);
+ spin_unlock_irqrestore(ap->lock, flags);
if (thaw)
ata_eh_thaw_port(ap);