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, 10 insertions, 0 deletions

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 04c208e3cec6..15a3d4deb272 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -66,6 +66,7 @@
 #include <asm/byteorder.h>
 #include <linux/cdrom.h>
 #include <linux/ratelimit.h>
+#include <linux/pm_runtime.h>
 
 #include "libata.h"
 #include "libata-transport.h"
@@ -5307,9 +5308,18 @@ static int ata_port_resume(struct device *dev)
         return rc;
 }
 
+static int ata_port_runtime_idle(struct device *dev)
+{
+        return pm_runtime_suspend(dev);
+}
+
 static const struct dev_pm_ops ata_port_pm_ops = {
         .suspend = ata_port_suspend,
         .resume = ata_port_resume,
+
+        .runtime_suspend = ata_port_suspend_common,
+        .runtime_resume = ata_port_resume,
+        .runtime_idle = ata_port_runtime_idle,
 };
 
 /**