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>
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 04c208e..15a3d4d 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 @@
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,
};
/**