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| author | Wolfgang Grandegger <wg@grandegger.com> | 2011-12-12 16:07:16 +0100 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2012-02-03 00:24:59 +0100 |
| commit | 7bb4db93ae59e0faf810a83a8578f56bc968ab01 (patch) | |
| tree | 416de109d52a28d60759d0dd44b18416a8c4d445 /drivers/net | |
| parent | can: flexcan: fix irq flooding by clearing all interrupt sources (diff) | |
| download | linux-7bb4db93ae59e0faf810a83a8578f56bc968ab01.tar.xz linux-7bb4db93ae59e0faf810a83a8578f56bc968ab01.zip | |
can: cc770: store echo skb before starting the transfer
On slow systems and high CAN bitrates, the error message
"can_put_echo_skb: BUG! echo_skb is occupied!" did show up because
can_put_echo_skb() was called after starting the transfer.
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/can/cc770/cc770.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/can/cc770/cc770.c b/drivers/net/can/cc770/cc770.c index 766896747643..c30f0e6f1048 100644 --- a/drivers/net/can/cc770/cc770.c +++ b/drivers/net/can/cc770/cc770.c @@ -440,12 +440,14 @@ static netdev_tx_t cc770_start_xmit(struct sk_buff *skb, struct net_device *dev) for (i = 0; i < dlc; i++) cc770_write_reg(priv, msgobj[mo].data[i], cf->data[i]); + /* Store echo skb before starting the transfer */ + can_put_echo_skb(skb, dev, 0); + cc770_write_reg(priv, msgobj[mo].ctrl1, RMTPND_RES | TXRQST_SET | CPUUPD_RES | NEWDAT_UNC); stats->tx_bytes += dlc; - can_put_echo_skb(skb, dev, 0); /* * HM: We had some cases of repeated IRQs so make sure the |