From 85f576c6806ee1a73be10b67b57a2a8f33a5611c Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Fri, 30 Oct 2015 13:48:19 +0100 Subject: can: Use correct type in sizeof() in nla_put() commit 562b103a21974c2f9cd67514d110f918bb3e1796 upstream. The sizeof() is invoked on an incorrect variable, likely due to some copy-paste error, and this might result in memory corruption. Fix this. Signed-off-by: Marek Vasut Cc: Wolfgang Grandegger Cc: netdev@vger.kernel.org Signed-off-by: Marc Kleine-Budde Signed-off-by: Greg Kroah-Hartman --- drivers/net/can/dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/can') diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c index aede704605c6..141c2a42d7ed 100644 --- a/drivers/net/can/dev.c +++ b/drivers/net/can/dev.c @@ -915,7 +915,7 @@ static int can_fill_info(struct sk_buff *skb, const struct net_device *dev) nla_put(skb, IFLA_CAN_BITTIMING_CONST, sizeof(*priv->bittiming_const), priv->bittiming_const)) || - nla_put(skb, IFLA_CAN_CLOCK, sizeof(cm), &priv->clock) || + nla_put(skb, IFLA_CAN_CLOCK, sizeof(priv->clock), &priv->clock) || nla_put_u32(skb, IFLA_CAN_STATE, state) || nla_put(skb, IFLA_CAN_CTRLMODE, sizeof(cm), &cm) || nla_put_u32(skb, IFLA_CAN_RESTART_MS, priv->restart_ms) || -- cgit v1.2.3 From 39851b0e4e62065a24ef2d96c7e32f6e4a5bc581 Mon Sep 17 00:00:00 2001 From: Mirza Krak Date: Tue, 10 Nov 2015 14:59:34 +0100 Subject: can: sja1000: clear interrupts on start commit 7cecd9ab80f43972c056dc068338f7bcc407b71c upstream. According to SJA1000 data sheet error-warning (EI) interrupt is not cleared by setting the controller in to reset-mode. Then if we have the following case: - system is suspended (echo mem > /sys/power/state) and SJA1000 is left in operating state - A bus error condition occurs which activates EI interrupt, system is still suspended which means EI interrupt will be not be handled nor cleared. If the above two events occur, on resume there is no way to return the SJA1000 to operating state, except to cycle power to it. By simply reading the IR register on start we will clear any previous conditions that could be present. Signed-off-by: Mirza Krak Reported-by: Christian Magnusson Signed-off-by: Marc Kleine-Budde Signed-off-by: Greg Kroah-Hartman --- drivers/net/can/sja1000/sja1000.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/net/can') diff --git a/drivers/net/can/sja1000/sja1000.c b/drivers/net/can/sja1000/sja1000.c index 32bd7f451aa4..0c048e261ee6 100644 --- a/drivers/net/can/sja1000/sja1000.c +++ b/drivers/net/can/sja1000/sja1000.c @@ -218,6 +218,9 @@ static void sja1000_start(struct net_device *dev) priv->write_reg(priv, SJA1000_RXERR, 0x0); priv->read_reg(priv, SJA1000_ECC); + /* clear interrupt flags */ + priv->read_reg(priv, SJA1000_IR); + /* leave reset mode */ set_normal_mode(dev); } -- cgit v1.2.3