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usb_kbd: release all keys on error / disconnect 

Signed-off-by: Peter Mamonov <pmamonov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Peter Mamonov 2017-03-23 00:38:03 +03:00 committed by Sascha Hauer
parent 9df009de99
commit f4ea4a134b
1 changed files with 11 additions and 0 deletions
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11
drivers/input/usb_kbd.c
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@ -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);