diff options
| author | Marc Kleine-Budde <mkl@pengutronix.de> | 2010-10-21 18:39:26 +0200 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2011-06-06 11:00:10 +0200 |
| commit | e14ee40bece891b5edccdd514112999ec423a448 (patch) | |
| tree | 6188f15965c8d8ed7ad7f0b4463f026370ed441e /drivers/net/can/at91_can.c | |
| parent | 5613fff2dc315e5f44623031cb62a29942548427 (diff) | |
can: at91_can: don't copy data to rx'ed RTR frames
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Acked-by: Wolfgang Grandegger <wg@grandegger.com>
Diffstat (limited to 'drivers/net/can/at91_can.c')
| -rw-r--r-- | 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 afd0f5d394b0..5358d7059211 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); |