lkml.org 
[lkml]   [2012]   [Jul]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v4 5/7] scsi: pm: use runtime resume callback if available
Date
When runtime resume a scsi device, if the device's driver has
implemented runtime resume callback, use that.

sr driver needs this to do different things for system resume and
runtime resume.

Signed-off-by: Aaron Lu <aaron.lu@amd.com>
---
drivers/scsi/scsi_pm.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/drivers/scsi/scsi_pm.c b/drivers/scsi/scsi_pm.c
index 83edb93..690136c 100644
--- a/drivers/scsi/scsi_pm.c
+++ b/drivers/scsi/scsi_pm.c
@@ -34,14 +34,19 @@ static int scsi_dev_type_suspend(struct device *dev, pm_message_t msg)
return err;
}

-static int scsi_dev_type_resume(struct device *dev)
+static int scsi_dev_type_resume(struct device *dev, bool runtime)
{
struct device_driver *drv;
int err = 0;
+ int (*resume)(struct device *);

drv = dev->driver;
- if (drv && drv->resume)
- err = drv->resume(dev);
+ if (runtime && drv && drv->pm && drv->pm->runtime_resume)
+ resume = drv->pm->runtime_resume;
+ else
+ resume = drv ? drv->resume : NULL;
+ if (resume)
+ err = resume(dev);
scsi_device_resume(to_scsi_device(dev));
dev_dbg(dev, "scsi resume: %d\n", err);
return err;
@@ -85,7 +90,7 @@ static int scsi_bus_resume_common(struct device *dev)
pm_runtime_get_sync(dev->parent);

if (scsi_is_sdev_device(dev))
- err = scsi_dev_type_resume(dev);
+ err = scsi_dev_type_resume(dev, false);
if (err == 0) {
pm_runtime_disable(dev);
pm_runtime_set_active(dev);
@@ -160,7 +165,7 @@ static int scsi_runtime_resume(struct device *dev)

dev_dbg(dev, "scsi_runtime_resume\n");
if (scsi_is_sdev_device(dev))
- err = scsi_dev_type_resume(dev);
+ err = scsi_dev_type_resume(dev, true);

/* Insert hooks here for targets, hosts, and transport classes */

--
1.7.11.3



\
 
 \ /
  Last update: 2012-07-27 12:01    [from the cache]
©2003-2011 Jasper Spaans