From: Benson Leung <bleung@chromium.org>
To: stern@rowland.harvard.edu, johan@kernel.org, jkosina@suse.cz,
linux-usb@vger.kernel.org, linux-input@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: snanda@chromium.org, Benson Leung <bleung@chromium.org>
Subject: [PATCH v2] HID: usbhid: clear needs_remote_wakeup before usb_kill_urb
Date: Thu, 13 Nov 2014 13:25:17 -0800 [thread overview]
Message-ID: <1415913917-15370-1-git-send-email-bleung@chromium.org> (raw)
In-Reply-To: <1415909806-23848-1-git-send-email-bleung@chromium.org>
usbhid->intf->needs_remote_wakeup is set when a device is
opened, and is cleared when a device is closed.
When a usbhid device that does not support remote wake
( i.e. !device_can_wakeup() ) is closed, we fail out of
autosuspend_check() because the autosuspend check is called
before the flag is cleared as a result of usb_kill_urb(usbhid->urbin);
The result is that a device that may otherwise autosuspend will
fail to enter suspend again after all handles to it are closed.
Clear the flag first before usb_kill_urb, which may result in a
autosuspend_check().
Signed-off-by: Benson Leung <bleung@chromium.org>
---
drivers/hid/usbhid/hid-core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index 04e34b9..ca66ad7 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -734,8 +734,8 @@ void usbhid_close(struct hid_device *hid)
spin_unlock_irq(&usbhid->lock);
hid_cancel_delayed_stuff(usbhid);
if (!(hid->quirks & HID_QUIRK_ALWAYS_POLL)) {
- usb_kill_urb(usbhid->urbin);
usbhid->intf->needs_remote_wakeup = 0;
+ usb_kill_urb(usbhid->urbin);
}
} else {
spin_unlock_irq(&usbhid->lock);
--
2.1.0.rc2.206.gedb03e5
next prev parent reply other threads:[~2014-11-13 21:25 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-13 20:16 [PATCH] HID: usbhid: get/put around clearing needs_remote_wakeup Benson Leung
2014-11-13 20:41 ` Alan Stern
2014-11-13 20:44 ` Benson Leung
2014-11-13 21:18 ` Alan Stern
2014-11-13 21:41 ` Benson Leung
2014-11-13 22:11 ` Alan Stern
2014-11-13 22:15 ` Benson Leung
2014-11-14 15:17 ` Alan Stern
2014-11-22 0:44 ` Benson Leung
2014-11-22 15:55 ` Alan Stern
2014-11-22 16:02 ` Alan Stern
2014-11-25 1:29 ` Benson Leung
2014-11-25 15:24 ` Alan Stern
2014-11-25 15:29 ` Benson Leung
2014-11-13 21:25 ` Benson Leung [this message]
2014-11-14 9:08 ` Oliver Neukum
2014-11-22 1:00 ` Benson Leung
2014-11-24 9:13 ` Oliver Neukum
2014-11-25 0:56 ` Benson Leung
2014-11-25 9:53 ` Oliver Neukum
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