[PATCH -next] drm/tegra: dpaux: Fix return value check in tegra_dpaux_probe()

[Wei Yongjun]

In case of error, the function devm_pinctrl_register() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().

Signed-off-by: Wei Yongjun <weiyj.lk at gmail.com>
---
 drivers/gpu/drm/tegra/dpaux.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/tegra/dpaux.c b/drivers/gpu/drm/tegra/dpaux.c
index 059f409..2fde44c 100644
--- a/drivers/gpu/drm/tegra/dpaux.c
+++ b/drivers/gpu/drm/tegra/dpaux.c
@@ -539,9 +539,9 @@ static int tegra_dpaux_probe(struct platform_device *pdev)
        dpaux->desc.owner = THIS_MODULE;

        dpaux->pinctrl = devm_pinctrl_register(&pdev->dev, &dpaux->desc, dpaux);
-       if (!dpaux->pinctrl) {
+       if (IS_ERR(dpaux->pinctrl)) {
                dev_err(&pdev->dev, "failed to register pincontrol\n");
-               return -ENODEV;
+               return PTR_ERR(dpaux->pinctrl);
        }
 #endif
        /* enable and clear all interrupts */