netdev - [PATCH] can: fix SJA1000 dlc for RTR packets

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Message-ID: <20110502145048.GF338@e-circ.dyndns.org>
Date:	Mon, 2 May 2011 16:50:48 +0200
From:	Kurt Van Dijck <kurt.van.dijck@....be>
To:	socketcan-core@...ts.berlios.de, netdev@...r.kernel.org
Subject: [PATCH] can: fix SJA1000 dlc for RTR packets

RTR frames do have a valid data length code on CAN.
The driver for SJA1000 did not handle that situation properly.

Signed-off-by: Kurt Van Dijck <kurt.van.dijck@....be>
---
 drivers/net/can/sja1000/sja1000.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/net/can/sja1000/sja1000.c b/drivers/net/can/sja1000/sja1000.c
index a358ea9..f501bba 100644
--- a/drivers/net/can/sja1000/sja1000.c
+++ b/drivers/net/can/sja1000/sja1000.c
@@ -346,10 +346,10 @@ static void sja1000_rx(struct net_device *dev)
 		    | (priv->read_reg(priv, REG_ID2) >> 5);
 	}
 
+	cf->can_dlc = get_can_dlc(fi & 0x0F);
 	if (fi & FI_RTR) {
 		id |= CAN_RTR_FLAG;
 	} else {
-		cf->can_dlc = get_can_dlc(fi & 0x0F);
 		for (i = 0; i < cf->can_dlc; i++)
 			cf->data[i] = priv->read_reg(priv, dreg++);
 	}
--
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