Skip poll if either usb_submit_int_msg() or usb_get_report()
returned -EAGAIN.
Signed-off-by: Peter Mamonov <pmamonov@xxxxxxxxx>
---
drivers/input/usb_kbd.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/input/usb_kbd.c b/drivers/input/usb_kbd.c
index 8c08aba..655d0c7 100644
--- a/drivers/input/usb_kbd.c
+++ b/drivers/input/usb_kbd.c
@@ -274,7 +274,7 @@ static void usb_kbd_poll(struct poller_struct *poller)
struct usb_kbd_pdata *data = container_of(poller,
struct usb_kbd_pdata, poller);
struct usb_device *usbdev = data->usbdev;
- int diff, tout;
+ int diff, tout, ret;
if (data->lock)
return;
@@ -284,7 +284,10 @@ static void usb_kbd_poll(struct poller_struct *poller)
goto exit;
data->last_poll = get_time_ns();
- if (0 > data->do_poll(data)) {
+ ret = data->do_poll(data);
+ if (ret == -EAGAIN)
+ goto exit;
+ if (ret < 0) {
/* exit and lock forever */
dev_err(&usbdev->dev,
"usb_submit_int_msg() failed. Keyboard disconnect?\n");
--
2.1.4
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