From 83f8d47b31f52b40f0158581c41c086c00fcad5b Mon Sep 17 00:00:00 2001 From: Wolfgang Grandegger Date: Wed, 13 Dec 2017 19:52:23 +0100 Subject: [PATCH] can: gs_usb: fix return value of the "set_bittiming" callback commit d5b42e6607661b198d8b26a0c30969605b1bf5c7 upstream. The "set_bittiming" callback treats a positive return value as error! For that reason "can_changelink()" will quit silently after setting the bittiming values without processing ctrlmode, restart-ms, etc. Signed-off-by: Wolfgang Grandegger Signed-off-by: Marc Kleine-Budde Signed-off-by: Greg Kroah-Hartman --- drivers/net/can/usb/gs_usb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/can/usb/gs_usb.c b/drivers/net/can/usb/gs_usb.c index 68ac3e8..8bf80ad 100644 --- a/drivers/net/can/usb/gs_usb.c +++ b/drivers/net/can/usb/gs_usb.c @@ -449,7 +449,7 @@ static int gs_usb_set_bittiming(struct net_device *netdev) dev_err(netdev->dev.parent, "Couldn't set bittimings (err=%d)", rc); - return rc; + return (rc > 0) ? 0 : rc; } static void gs_usb_xmit_callback(struct urb *urb) -- 2.7.4