[PATCH 4/5 V3] usb: call pm_runtime_put_noidle in pm_runtime_get_sync failed case

[Li Fei]

Even in failed case of pm_runtime_get_sync, the usage_count
is incremented. In order to keep the usage_count with correct
value and runtime power management to behave correctly, call
pm_runtime_put(_sync/noidle) in such case.

Signed-off-by Liu Chuansheng 
Signed-off-by: Li Fei 
---
 drivers/usb/core/hub.c |3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 5480352..4a6c055 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -3148,12 +3148,13 @@ int usb_port_resume(struct usb_device *udev, 
pm_message_t msg)
 
if (port_dev->did_runtime_put) {
status = pm_runtime_get_sync(&port_dev->dev);
-   port_dev->did_runtime_put = false;
if (status < 0) {
dev_dbg(&udev->dev, "can't resume usb port, status 
%d\n",
status);
+   pm_runtime_put_noidle(&port_dev->dev);
return status;
}
+   port_dev->did_runtime_put = false;
}
 
/* Skip the initial Clear-Suspend step for a remote wakeup */
-- 
1.7.4.1




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[PATCH 4/5 V3] usb: call pm_runtime_put_noidle in pm_runtime_get_sync failed case

[Li Fei]

Even in failed case of pm_runtime_get_sync, the usage_count
is incremented. In order to keep the usage_count with correct
value and runtime power management to behave correctly, call
pm_runtime_put(_sync/noidle) in such case.

Signed-off-by Liu Chuansheng 
Signed-off-by: Li Fei 
---
 drivers/usb/core/hub.c |3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 5480352..4a6c055 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -3148,12 +3148,13 @@ int usb_port_resume(struct usb_device *udev, 
pm_message_t msg)
 
if (port_dev->did_runtime_put) {
status = pm_runtime_get_sync(&port_dev->dev);
-   port_dev->did_runtime_put = false;
if (status < 0) {
dev_dbg(&udev->dev, "can't resume usb port, status 
%d\n",
status);
+   pm_runtime_put_noidle(&port_dev->dev);
return status;
}
+   port_dev->did_runtime_put = false;
}
 
/* Skip the initial Clear-Suspend step for a remote wakeup */
-- 
1.7.4.1



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Please read the FAQ at  http://www.tux.org/lkml/