Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.14 648/849] HID: u2fzero: properly handle timeouts in usb_submit_urb | Date | Mon, 15 Nov 2021 18:02:11 +0100 |
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From: Andrej Shadura <andrew.shadura@collabora.co.uk>
[ Upstream commit 43775e62c4b784f44a159e13ba80e6146a42d502 ]
The wait_for_completion_timeout function returns 0 if timed out or a positive value if completed. Hence, "less than zero" comparison always misses timeouts and doesn't kill the URB as it should, leading to re-sending it while it is active.
Fixes: 42337b9d4d95 ("HID: add driver for U2F Zero built-in LED and RNG") Signed-off-by: Andrej Shadura <andrew.shadura@collabora.co.uk> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/hid/hid-u2fzero.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hid/hid-u2fzero.c b/drivers/hid/hid-u2fzero.c index 94f78ffb76d04..67ae2b18e33ac 100644 --- a/drivers/hid/hid-u2fzero.c +++ b/drivers/hid/hid-u2fzero.c @@ -132,7 +132,7 @@ static int u2fzero_recv(struct u2fzero_device *dev, ret = (wait_for_completion_timeout( &ctx.done, msecs_to_jiffies(USB_CTRL_SET_TIMEOUT))); - if (ret < 0) { + if (ret == 0) { usb_kill_urb(dev->urb); hid_err(hdev, "urb submission timed out"); } else { -- 2.33.0
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