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Input: cm109 - do not stomp on control URB

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We need to make sure we are not stomping on the control URB that was
issued when opening the device when attempting to toggle buzzer.
To do that we need to mark it as pending in cm109_open().

Reported-and-tested-by: syzbot+150f793ac5bc18eee150@syzkaller.appspotmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2020-12-09 20:13:24 -08:00
parent ce6520b0ea
commit 82e0609047
1 changed files with 5 additions and 2 deletions
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7
drivers/input/misc/cm109.c
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@ -568,12 +568,15 @@ static int cm109_input_open(struct input_dev *idev)
dev->ctl_data->byte[HID_OR2] = dev->keybit;
dev->ctl_data->byte[HID_OR3] = 0x00;
dev->ctl_urb_pending = 1;
error = usb_submit_urb(dev->urb_ctl, GFP_KERNEL);
if (error)
if (error) {
dev->ctl_urb_pending = 0;
dev_err(&dev->intf->dev, "%s: usb_submit_urb (urb_ctl) failed %d\n",
__func__, error);
else
} else {
dev->open = 1;
}
mutex_unlock(&dev->pm_mutex);