Commit fbcb12bc authored Dec 08, 2021 by Jimmy Assarsson Committed by Greg Kroah-Hartman Dec 14, 2021

can: kvaser_pciefd: kvaser_pciefd_rx_error_frame(): increase correct stats->{rx,tx}_errors counter

commit 36aea60fc892ce73f96d45dc7eb239c7c4c1fa69 upstream.

Check the direction bit in the error frame packet (EPACK) to determine
which net_device_stats {rx,tx}_errors counter to increase.

Fixes: 26ad340e ("can: kvaser_pciefd: Add driver for Kvaser PCIEcan devices")
Link: https://lore.kernel.org/all/20211208152122.250852-1-extja@kvaser.com


Cc: stable@vger.kernel.org
Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 68daa476

drivers/net/can/kvaser_pciefd.c

+7 −1

Original line number	Diff line number	Diff line
		@@ -248,6 +248,9 @@ MODULE_DESCRIPTION("CAN driver for Kvaser CAN/PCIe devices");
		#define KVASER_PCIEFD_SPACK_EWLR BIT(23)
		#define KVASER_PCIEFD_SPACK_EPLR BIT(24)

		/* Kvaser KCAN_EPACK second word */
		#define KVASER_PCIEFD_EPACK_DIR_TX BIT(0)

		struct kvaser_pciefd;

		struct kvaser_pciefd_can {
		@@ -1283,6 +1286,9 @@ static int kvaser_pciefd_rx_error_frame(struct kvaser_pciefd_can *can,

		can->err_rep_cnt++;
		can->can.can_stats.bus_error++;
		if (p->header[1] & KVASER_PCIEFD_EPACK_DIR_TX)
		stats->tx_errors++;
		else
		stats->rx_errors++;

		can->bec.txerr = bec.txerr;