From b9958a951ed4f8adff9ce02c2b1cb4ede8e2aa0e Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Thu, 21 Oct 2010 06:37:10 +0000 Subject: can: mcp251x: fix reception of standard RTR frames This patch sets the missing CAN_RTR_FLAG if a standard RTR frame is received. (For extended frames the CAN_RTR_FLAG was already set correctly.) Signed-off-by: Marc Kleine-Budde Signed-off-by: David S. Miller --- drivers/net/can/mcp251x.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/net') diff --git a/drivers/net/can/mcp251x.c b/drivers/net/can/mcp251x.c index 6aadc3e32bd..7ab534aee45 100644 --- a/drivers/net/can/mcp251x.c +++ b/drivers/net/can/mcp251x.c @@ -169,6 +169,7 @@ # define RXBSIDH_SHIFT 3 #define RXBSIDL(n) (((n) * 0x10) + 0x60 + RXBSIDL_OFF) # define RXBSIDL_IDE 0x08 +# define RXBSIDL_SRR 0x10 # define RXBSIDL_EID 3 # define RXBSIDL_SHIFT 5 #define RXBEID8(n) (((n) * 0x10) + 0x60 + RXBEID8_OFF) @@ -475,6 +476,8 @@ static void mcp251x_hw_rx(struct spi_device *spi, int buf_idx) frame->can_id = (buf[RXBSIDH_OFF] << RXBSIDH_SHIFT) | (buf[RXBSIDL_OFF] >> RXBSIDL_SHIFT); + if (buf[RXBSIDL_OFF] & RXBSIDL_SRR) + frame->can_id |= CAN_RTR_FLAG; } /* Data length */ frame->can_dlc = get_can_dlc(buf[RXBDLC_OFF] & RXBDLC_LEN_MASK); -- cgit v1.2.3-70-g09d2