can: sun4i: fix loopback mode

Fix loopback mode by setting the right flag and remove presume mode.

Signed-off-by: Gerhard Bertelsmann <info@gerhard-bertelsmann.de>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/sun4i_can.c b/drivers/net/can/sun4i_can.c
index 68ef0a4..b0c8085 100644 (file)
--- a/drivers/net/can/sun4i_can.c
+++ b/drivers/net/can/sun4i_can.c
@@ -342,7 +342,7 @@ static int sun4i_can_start(struct net_device *dev)
 
        /* enter the selected mode */
        mod_reg_val = readl(priv->base + SUN4I_REG_MSEL_ADDR);
-       if (priv->can.ctrlmode & CAN_CTRLMODE_PRESUME_ACK)
+       if (priv->can.ctrlmode & CAN_CTRLMODE_LOOPBACK)
                mod_reg_val |= SUN4I_MSEL_LOOPBACK_MODE;
        else if (priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY)
                mod_reg_val |= SUN4I_MSEL_LISTEN_ONLY_MODE;
@@ -811,7 +811,6 @@ static int sun4ican_probe(struct platform_device *pdev)
        priv->can.ctrlmode_supported = CAN_CTRLMODE_BERR_REPORTING |
                                       CAN_CTRLMODE_LISTENONLY |
                                       CAN_CTRLMODE_LOOPBACK |
-                                      CAN_CTRLMODE_PRESUME_ACK |
                                       CAN_CTRLMODE_3_SAMPLES;
        priv->base = addr;
        priv->clk = clk;