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authorHolger Bechtold <Holger.Bechtold@gmx.net>2013-11-25 15:48:19 +0100
committerMarc Kleine-Budde <mkl@pengutronix.de>2013-11-25 21:48:54 +0100
commit7ee330c7b3b738847bf297912b371bbcec3bc994 (patch)
tree71314361df1ad1e174b87b8f913f361231b204f8 /drivers/net/can/c_can/c_can.c
parente35d46adc49b469fd92bdb64fea8af93640e6651 (diff)
downloadblackbird-op-linux-7ee330c7b3b738847bf297912b371bbcec3bc994.tar.gz
blackbird-op-linux-7ee330c7b3b738847bf297912b371bbcec3bc994.zip
can: c_can: fix calculation of transmitted bytes on tx complete
The number of bytes transmitted was not updated correctly, if several CAN messages (with different length) were transmitted in one 'bunch'. Thus programs like 'ifconfig' showed wrong transmit byte counts. Reason was, that the message object whose DLC is to be read was not necessarily the active one at the time when priv->read_reg(priv, C_CAN_IFACE(MSGCTRL_REG, 0)) & IF_MCONT_DLC_MASK; was executed. Signed-off-by: Holger Bechtold <Holger.Bechtold@gmx.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net/can/c_can/c_can.c')
-rw-r--r--drivers/net/can/c_can/c_can.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c
index e59c42b446a9..77061eebb034 100644
--- a/drivers/net/can/c_can/c_can.c
+++ b/drivers/net/can/c_can/c_can.c
@@ -763,6 +763,7 @@ static void c_can_do_tx(struct net_device *dev)
if (!(val & (1 << (msg_obj_no - 1)))) {
can_get_echo_skb(dev,
msg_obj_no - C_CAN_MSG_OBJ_TX_FIRST);
+ c_can_object_get(dev, 0, msg_obj_no, IF_COMM_ALL);
stats->tx_bytes += priv->read_reg(priv,
C_CAN_IFACE(MSGCTRL_REG, 0))
& IF_MCONT_DLC_MASK;
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