diff options
| author |   Oliver Hartkopp <socketcan@hartkopp.net> | 2014-02-28 16:36:20 +0100 |
|---|---|---|
| committer |   Marc Kleine-Budde <mkl@pengutronix.de> | 2014-03-07 09:18:21 +0100 |
| commit | b30749fdfb9b72f4b1f03673cb5e45b8d4331188 (patch) | |
| tree | be63b059e8044248ae877243c3b8a2faf02d250a /drivers/net/can | |
| parent | can: preserve skbuff protocol in can_put_echo_skb (diff) | |
| download | linux-dev-b30749fdfb9b72f4b1f03673cb5e45b8d4331188.tar.xz linux-dev-b30749fdfb9b72f4b1f03673cb5e45b8d4331188.zip | |
can: only send bitrate data via netlink when available
When setting the bitrate both can_calc_bittiming() and can_fixup_bittiming()
lead to the bitrate variable to be set, when a proper bit timing is available.
Only then the bitrate configuration is stored for the device, so checking for
priv->bittiming.bitrate is always sufficient.
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Acked-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net/can')
| -rw-r--r-- | drivers/net/can/dev.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c index e1a37413d53e..de04eac7c5f3 100644 --- a/drivers/net/can/dev.c +++ b/drivers/net/can/dev.c @@ -606,7 +606,7 @@ int open_candev(struct net_device *dev) { struct can_priv *priv = netdev_priv(dev); - if (!priv->bittiming.tq && !priv->bittiming.bitrate) { + if (!priv->bittiming.bitrate) { netdev_err(dev, "bit-timing not yet defined\n"); return -EINVAL; } @@ -719,7 +719,8 @@ static size_t can_get_size(const struct net_device *dev) struct can_priv *priv = netdev_priv(dev); size_t size = 0; - size += nla_total_size(sizeof(struct can_bittiming)); /* IFLA_CAN_BITTIMING */ + if (priv->bittiming.bitrate) /* IFLA_CAN_BITTIMING */ + size += nla_total_size(sizeof(struct can_bittiming)); if (priv->bittiming_const) /* IFLA_CAN_BITTIMING_CONST */ size += nla_total_size(sizeof(struct can_bittiming_const)); size += nla_total_size(sizeof(struct can_clock)); /* IFLA_CAN_CLOCK */ @@ -741,8 +742,9 @@ static int can_fill_info(struct sk_buff *skb, const struct net_device *dev) if (priv->do_get_state) priv->do_get_state(dev, &state); - if (nla_put(skb, IFLA_CAN_BITTIMING, - sizeof(priv->bittiming), &priv->bittiming) || + if ((priv->bittiming.bitrate && + nla_put(skb, IFLA_CAN_BITTIMING, + sizeof(priv->bittiming), &priv->bittiming)) || (priv->bittiming_const && nla_put(skb, IFLA_CAN_BITTIMING_CONST, sizeof(*priv->bittiming_const), priv->bittiming_const)) || |