From ee6f0988a69b3a81bcea0871418ecf5db332149c Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Thu, 24 Mar 2011 02:34:32 +0000 Subject: [PATCH] can: c_can: disable one shot mode until driver is fixed This patch disables the one shot mode, until the driver has been fixed and tested to support it. > I'm quite sure I've seen a situation where msg_obj 17 "seemed" to be > pending, while msg_obj 18 and 19 already have been transmitted. But > in that case, I enabled ONESHOT for the can interface, which enables > the DA mode (automatic retransmission is disabled). Reported-by: Jan Altenberg Signed-off-by: Marc Kleine-Budde Signed-off-by: Kurt Van Dijck Cc: Bhupesh Sharma Acked-by: Wolfgang Grandegger Signed-off-by: David S. Miller --- drivers/net/can/c_can/c_can.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index 110eda01843c..d0bffb08aef5 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -588,14 +588,9 @@ static void c_can_chip_config(struct net_device *dev) { struct c_can_priv *priv = netdev_priv(dev); - if (priv->can.ctrlmode & CAN_CTRLMODE_ONE_SHOT) - /* disable automatic retransmission */ - priv->write_reg(priv, &priv->regs->control, - CONTROL_DISABLE_AR); - else - /* enable automatic retransmission */ - priv->write_reg(priv, &priv->regs->control, - CONTROL_ENABLE_AR); + /* enable automatic retransmission */ + priv->write_reg(priv, &priv->regs->control, + CONTROL_ENABLE_AR); if (priv->can.ctrlmode & (CAN_CTRLMODE_LISTENONLY & CAN_CTRLMODE_LOOPBACK)) { @@ -1112,8 +1107,7 @@ struct net_device *alloc_c_can_dev(void) priv->can.bittiming_const = &c_can_bittiming_const; priv->can.do_set_mode = c_can_set_mode; priv->can.do_get_berr_counter = c_can_get_berr_counter; - priv->can.ctrlmode_supported = CAN_CTRLMODE_ONE_SHOT | - CAN_CTRLMODE_LOOPBACK | + priv->can.ctrlmode_supported = CAN_CTRLMODE_LOOPBACK | CAN_CTRLMODE_LISTENONLY | CAN_CTRLMODE_BERR_REPORTING;