netdev - [PATCH net-next 47/47] can: bittiming: can_validate

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Message-Id: <20230206131620.2758724-48-mkl@pengutronix.de>
Date:   Mon,  6 Feb 2023 14:16:20 +0100
From:   Marc Kleine-Budde <mkl@...gutronix.de>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, linux-can@...r.kernel.org,
        kernel@...gutronix.de, Marc Kleine-Budde <mkl@...gutronix.de>
Subject: [PATCH net-next 47/47] 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@...gutronix.de>
---
 drivers/net/can/dev/bittiming.c | 3 +++
 1 file changed, 3 insertions(+)

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;
 }
 
-- 
2.39.1