[PATCH] libata: implement ata_eh_wait()
Implement ata_eh_wait(). On return from this function, it's
guaranteed that the EH which was pending or in progress when the
function was called is complete - including the tailing part of SCSI
EH. This will be used by hotplug and others to synchronize with EH.
Signed-off-by: Tejun Heo <htejun@gmail.com>
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 11df827..66df895 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -5189,6 +5189,7 @@
INIT_WORK(&ap->port_task, NULL, NULL);
INIT_LIST_HEAD(&ap->eh_done_q);
+ init_waitqueue_head(&ap->eh_wait_q);
/* set cable type */
ap->cbl = ATA_CBL_NONE;