ata: update ata port's runtime status during system resume
The ata port is brought back to full power state during system resume.
So its runtime PM status will have to be updated to reflect
the actual post-system sleep status.
This also fixes below warning during system suspend/resume.
WARNING: at /work/linux/drivers/ata/libata-eh.c:4034
ata_scsi_port_error_handler+0x89/0x557()
4034 WARN_ON(!(ap->pflags & ATA_PFLAG_SUSPENDED));
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 d5935e4..ba1ed9b 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -5298,7 +5298,7 @@
return ata_port_suspend_common(dev);
}
-static int ata_port_resume(struct device *dev)
+static int ata_port_resume_common(struct device *dev)
{
struct ata_port *ap = to_ata_port(dev);
int rc;
@@ -5308,6 +5308,20 @@
return rc;
}
+static int ata_port_resume(struct device *dev)
+{
+ int rc;
+
+ rc = ata_port_resume_common(dev);
+ if (!rc) {
+ pm_runtime_disable(dev);
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+ }
+
+ return rc;
+}
+
static int ata_port_runtime_idle(struct device *dev)
{
return pm_runtime_suspend(dev);
@@ -5318,7 +5332,7 @@
.resume = ata_port_resume,
.runtime_suspend = ata_port_suspend_common,
- .runtime_resume = ata_port_resume,
+ .runtime_resume = ata_port_resume_common,
.runtime_idle = ata_port_runtime_idle,
};