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Subject[ 20/37] can: bcm: initialize ifindex for timeouts without previous frame reception
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3.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Oliver Hartkopp <socketcan@hartkopp.net>

commit 81b401100c01d2357031e874689f89bd788d13cd upstream.

Set in the rx_ifindex to pass the correct interface index in the case of a
message timeout detection. Usually the rx_ifindex value is set at receive
time. But when no CAN frame has been received the RX_TIMEOUT notification
did not contain a valid value.

Reported-by: Andre Naujoks <nautsch2@googlemail.com>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
net/can/bcm.c | 3 +++
1 file changed, 3 insertions(+)

--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -1085,6 +1085,9 @@ static int bcm_rx_setup(struct bcm_msg_h
op->sk = sk;
op->ifindex = ifindex;

+ /* ifindex for timeout events w/o previous frame reception */
+ op->rx_ifindex = ifindex;
+
/* initialize uninitialized (kzalloc) structure */
hrtimer_init(&op->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
op->timer.function = bcm_rx_timeout_handler;



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