From: Malcolm Priestley Date: Tue, 14 Apr 2020 10:39:23 +0000 (+0100) Subject: staging: vt6656: Power save stop wake_up_count wrap around. X-Git-Tag: v5.7-rc3~5^2~6 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=ea81c3486442f4643fc9825a2bb1b430b829bccd;p=linux-block.git staging: vt6656: Power save stop wake_up_count wrap around. conf.listen_interval can sometimes be zero causing wake_up_count to wrap around up to many beacons too late causing CTRL-EVENT-BEACON-LOSS as in. wpa_supplicant[795]: message repeated 45 times: [..CTRL-EVENT-BEACON-LOSS ] Fixes: 43c93d9bf5e2 ("staging: vt6656: implement power saving code.") Cc: stable Signed-off-by: Malcolm Priestley Link: https://lore.kernel.org/r/fce47bb5-7ca6-7671-5094-5c6107302f2b@gmail.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/vt6656/usbpipe.c b/drivers/staging/vt6656/usbpipe.c index eae211e5860f..91b62c3dff7b 100644 --- a/drivers/staging/vt6656/usbpipe.c +++ b/drivers/staging/vt6656/usbpipe.c @@ -207,7 +207,8 @@ static void vnt_int_process_data(struct vnt_private *priv) priv->wake_up_count = priv->hw->conf.listen_interval; - --priv->wake_up_count; + if (priv->wake_up_count) + --priv->wake_up_count; /* Turn on wake up to listen next beacon */ if (priv->wake_up_count == 1)