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>
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 @@
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);