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Date: Mon, 6 Jun 2011 15:42:52 +0200
From: Marc Kleine-Budde <mkl@...gutronix.de>
To: davem@...emloft.net
Cc: socketcan-core@...ts.berlios.de, netdev@...r.kernel.org,
Marc Kleine-Budde <mkl@...gutronix.de>
Subject: [PATCH 03/11] can: at91_can: don't copy data to rx'ed RTR frames
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
Acked-by: Wolfgang Grandegger <wg@...ndegger.com>
---
drivers/net/can/at91_can.c | 10 ++++++----
1 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c
index afd0f5d..5358d70 100644
--- a/drivers/net/can/at91_can.c
+++ b/drivers/net/can/at91_can.c
@@ -513,12 +513,14 @@ static void at91_read_mb(struct net_device *dev, unsigned int mb,
cf->can_id = (reg_mid >> 18) & CAN_SFF_MASK;
reg_msr = at91_read(priv, AT91_MSR(mb));
- if (reg_msr & AT91_MSR_MRTR)
- cf->can_id |= CAN_RTR_FLAG;
cf->can_dlc = get_can_dlc((reg_msr >> 16) & 0xf);
- *(u32 *)(cf->data + 0) = at91_read(priv, AT91_MDL(mb));
- *(u32 *)(cf->data + 4) = at91_read(priv, AT91_MDH(mb));
+ if (reg_msr & AT91_MSR_MRTR)
+ cf->can_id |= CAN_RTR_FLAG;
+ else {
+ *(u32 *)(cf->data + 0) = at91_read(priv, AT91_MDL(mb));
+ *(u32 *)(cf->data + 4) = at91_read(priv, AT91_MDH(mb));
+ }
/* allow RX of extended frames */
at91_write(priv, AT91_MID(mb), AT91_MID_MIDE);
--
1.7.4.1
--
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