From: Marc Kleine-Budde <mkl@pengutronix.de>
Date: Wed, 1 Feb 2023 19:27:47 +0000 (+0100)
Subject: can: bittiming: can_validate_bitrate(): report error via netlink
X-Git-Tag: io_uring-6.3-2023-03-03~13^2~124^2^2
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=6d7934719f2654587b96cbae5e326c7e33c24da8;p=linux-2.6-block.git

can: bittiming: can_validate_bitrate(): report error via netlink

Report an error to user space via netlink if the requested bit rate is
not supported by the device.

Link: https://lore.kernel.org/all/20230202110854.2318594-18-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---

diff --git a/drivers/net/can/dev/bittiming.c b/drivers/net/can/dev/bittiming.c
index 55714e08ca3a..0b93900b1dfa 100644
--- a/drivers/net/can/dev/bittiming.c
+++ b/drivers/net/can/dev/bittiming.c
@@ -124,6 +124,9 @@ can_validate_bitrate(const struct net_device *dev, const struct can_bittiming *b
 			return 0;
 	}
 
+	NL_SET_ERR_MSG_FMT(extack, "bitrate %u bps not supported",
+			   bt->brp);
+
 	return -EINVAL;
 }