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can: c_can: Set reserved bit in IFx_MASK2 to 1 on write

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commit 2bd3bc4e84 upstream.

According to C_CAN documentation, the reserved bit in IFx_MASK2 register is
fixed 1.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Qiang Huang <h.huangqiang@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexander Stein 2012-12-13 10:06:10 +01:00 committed by Greg Kroah-Hartman
parent a070047141
commit c7b5c6cd19
1 changed files with 5 additions and 1 deletions
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6
drivers/net/can/c_can/c_can.c
View file

@ -446,8 +446,12 @@ static void c_can_setup_receive_object(struct net_device *dev, int iface,
priv->write_reg(priv, &priv->regs->ifregs[iface].mask1,
IFX_WRITE_LOW_16BIT(mask));
/* According to C_CAN documentation, the reserved bit
* in IFx_MASK2 register is fixed 1
*/
priv->write_reg(priv, &priv->regs->ifregs[iface].mask2,
IFX_WRITE_HIGH_16BIT(mask));
IFX_WRITE_HIGH_16BIT(mask) | BIT(13));
priv->write_reg(priv, &priv->regs->ifregs[iface].arb1,
IFX_WRITE_LOW_16BIT(id));