[PATCH] usb_kbd: release all keys on error / disconnect

[Sascha Hauer]

On Thu, Mar 23, 2017 at 12:38:03AM +0300, Peter Mamonov wrote:
> Signed-off-by: Peter Mamonov <pmamonov at gmail.com>
> ---
>  drivers/input/usb_kbd.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)

Applied, thanks

Sascha

> 
> diff --git a/drivers/input/usb_kbd.c b/drivers/input/usb_kbd.c
> index 2acc95d9f..a2b92c285 100644
> --- a/drivers/input/usb_kbd.c
> +++ b/drivers/input/usb_kbd.c
> @@ -58,6 +58,14 @@ struct usb_kbd_pdata {
>  	struct input_device input;
>  };
>  
> +static void usb_kbd_release_all_keys(struct usb_kbd_pdata *data)
> +{
> +	int i;
> +
> +	for (i = 0; i <= KEY_MAX; i++)
> +		input_report_key_event(&data->input, i, 0);
> +}
> +
>  static int usb_kbd_int_poll(struct usb_kbd_pdata *data)
>  {
>  	return usb_submit_int_msg(data->usbdev, data->intpipe, data->new,
> @@ -98,6 +106,8 @@ static void usb_kbd_poll(void *arg)
>  	int ret, i;
>  
>  	ret = data->do_poll(data);
> +	if (ret < 0)
> +		usb_kbd_release_all_keys(data);
>  	if (ret == -EAGAIN)
>  		goto exit;
>  	if (ret < 0) {
> @@ -209,6 +219,7 @@ static void usb_kbd_disconnect(struct usb_device *usbdev)
>  {
>  	struct usb_kbd_pdata *data = usbdev->drv_data;
>  
> +	usb_kbd_release_all_keys(data);
>  	poller_async_unregister(&data->poller);
>  	input_device_unregister(&data->input);
>  	dma_free(data->new);
> -- 
> 2.11.0
> 
> 
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