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can: esd_usb2: Fix can_dlc value for received RTR, frames

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commit 72d92e865d1560723e1957ee3f393688c49ca5bf upstream.

The dlc member of the struct rx_msg contains also the ESD_RTR flag to
mark received RTR frames. Without the fix the can_dlc value for received
RTR frames would always be set to 8 by get_can_dlc() instead of the
received value.

Fixes: 96d8e90382 ("can: Add driver for esd CAN-USB/2 device")
Signed-off-by: Stefan Mätje <stefan.maetje@esd.eu>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Willy Tarreau <w@1wt.eu>
This commit is contained in:
Stefan Mätje
2017-10-18 13:25:17 +02:00
committed by Willy Tarreau
parent 4de0e6b506
commit 541cbdc60a
1 changed files with 1 additions and 1 deletions
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drivers/net/can/usb/esd_usb2.c
+1 -1
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@@ -335,7 +335,7 @@ static void esd_usb2_rx_can_msg(struct esd_usb2_net_priv *priv,
}
cf->can_id = id & ESD_IDMASK;
cf->can_dlc = get_can_dlc(msg->msg.rx.dlc);
cf->can_dlc = get_can_dlc(msg->msg.rx.dlc & ~ESD_RTR);
if (id & ESD_EXTID)
cf->can_id |= CAN_EFF_FLAG;