ata: add ata port runtime PM callbacks

Add ata port runtime suspend/resume/idle callbacks.
Set ->eh_noresume to skip the runtime PM calls on scsi host
in the error handler to avoid dead lock.

Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 7ae1e771d950..508a60bfe5c1 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -3381,6 +3381,7 @@ int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht)
                 if (!shost)
                         goto err_alloc;
 
+                shost->eh_noresume = 1;
                 *(struct ata_port **)&shost->hostdata[0] = ap;
                 ap->scsi_host = shost;