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can: c_can: precedence error in c_can_chip_config()

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(CAN_CTRLMODE_LISTENONLY & CAN_CTRLMODE_LOOPBACK) is (0x02 & 0x01) which
is zero so the condition is never true.  The intent here was to test
that both flags were set.

Cc: <stable@kernel.org> # 2.6.39+
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dan Carpenter 2012-06-15 00:20:44 +00:00 committed by David S. Miller
parent 424d54d2dc
commit d9cb9bd63e
1 changed files with 2 additions and 2 deletions
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4
drivers/net/can/c_can/c_can.c
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@ -590,8 +590,8 @@ static void c_can_chip_config(struct net_device *dev)
priv->write_reg(priv, &priv->regs->control,
CONTROL_ENABLE_AR);
if (priv->can.ctrlmode & (CAN_CTRLMODE_LISTENONLY &
CAN_CTRLMODE_LOOPBACK)) {
if ((priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY) &&
(priv->can.ctrlmode & CAN_CTRLMODE_LOOPBACK)) {
/* loopback + silent mode : useful for hot self-test */
priv->write_reg(priv, &priv->regs->control, CONTROL_EIE |
CONTROL_SIE | CONTROL_IE | CONTROL_TEST);