Currently, "power/wakeup" sysfs file can't control remote wakeup in the runtime
suspend. It only depends on "usb_interface->needs_remote_wakeup" to determine
whether enable remote wakeup or not when runtime suspending. Usr space has no
choice. This patch is to enable "power/wakeup" to control remote wakeup in the
runtime suspend.
Signed-off-by: Lan Tianyu <tianyu.lan@xxxxxxxxx>
---
drivers/usb/core/driver.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index 6978101..e79b95e 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -1692,7 +1692,7 @@ static int autosuspend_check(struct usb_device *udev)
* any interface drivers require remote wakeup but it isn't available.
*/
w = 0;
- if (udev->actconfig) {
+ if (udev->actconfig && device_may_wakeup(&udev->dev)) {
for (i = 0; i < udev->actconfig->desc.bNumInterfaces; i++) {
intf = udev->actconfig->interface[i];
--
1.7.6.rc2.8.g28eb
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