From: Oliver Neukum <oneu...@suse.de>
During open() it is unnecessary to wait for the device to flush
stale inputs if the device is polled while closed due to a quirk
or opening fails.
Signed-off-by: Oliver Neukum <oneu...@suse.com>
---
drivers/hid/usbhid/hid-core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index 63d1f0f..54dec35 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -710,7 +710,8 @@ int usbhid_open(struct hid_device *hid)
* Wait 50 msec for the queue to empty before allowing events
* to go through hid.
*/
- msleep(50);
+ if (res == 0 && !(hid->quirks & HID_QUIRK_ALWAYS_POLL))
+ msleep(50);
clear_bit(HID_RESUME_RUNNING, &usbhid->iofl);
}
done:
--
2.1.4
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