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can: sun4i_can: sun4i_can_err(): don't count arbitration lose as an error

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Losing arbitration is normal in a CAN-bus network, it means that a higher
priority frame is being send and the pending message will be retried later.
Hence most driver only increment arbitration_lost, but the sun4i driver also
incremeants tx_error, causing errors to be reported on a normal functioning
CAN-bus. So stop counting them as errors.

Fixes: 0738eff14d ("can: Allwinner A10/A20 CAN Controller support - Kernel module")
Signed-off-by: Jeroen Hofstee <jhofstee@victronenergy.com>
Link: https://lore.kernel.org/r/20201127095941.21609-1-jhofstee@victronenergy.com
[mkl: split into two seperate patches]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Jeroen Hofstee 2020-11-27 10:59:38 +01:00 committed by Marc Kleine-Budde
parent bd0ccb92ef
commit c2d095eff7
1 changed files with 0 additions and 1 deletions
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1
drivers/net/can/sun4i_can.c
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@ -604,7 +604,6 @@ static int sun4i_can_err(struct net_device *dev, u8 isrc, u8 status)
netdev_dbg(dev, "arbitration lost interrupt\n");
alc = readl(priv->base + SUN4I_REG_STA_ADDR);
priv->can.can_stats.arbitration_lost++;
stats->tx_errors++;
if (likely(skb)) {
cf->can_id |= CAN_ERR_LOSTARB;
cf->data[0] = (alc >> 8) & 0x1f;