can: c_can: checking IS_ERR() instead of NULL

devm_ioremap() returns NULL on error, not an ERR_PTR().

Fixes: 33cf75656923 ('can: c_can_platform: Fix raminit, use devm_ioremap() instead of devm_ioremap_resource()')

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: linux-stable <stable@vger.kernel.org> # >= v3.11
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/c_can/c_can_platform.c b/drivers/net/can/c_can/c_can_platform.c
index 5dede6e..109cb44 100644 (file)
--- a/drivers/net/can/c_can/c_can_platform.c
+++ b/drivers/net/can/c_can/c_can_platform.c
@@ -280,7 +280,7 @@ static int c_can_plat_probe(struct platform_device *pdev)
 
                priv->raminit_ctrlreg = devm_ioremap(&pdev->dev, res->start,
                                                     resource_size(res));
-               if (IS_ERR(priv->raminit_ctrlreg) || priv->instance < 0)
+               if (!priv->raminit_ctrlreg || priv->instance < 0)
                        dev_info(&pdev->dev, "control memory is not used for raminit\n");
                else
                        priv->raminit = c_can_hw_raminit_ti;