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drm/tegra: dpaux: Fix error handling 

The devm_pinctrl_register() function returns an error pointer or a valid
handle. So checking for NULL here is pointless and can never trigger.

Check the returned value with IS_ERR instead and propagate this value as
done in the other functions which call devm_pinctrl_register().

Fixes: 0751bb5c44 ("drm/tegra: dpaux: Add pinctrl support")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Christophe Jaillet 2016-10-28 11:09:45 +02:00 committed by Thierry Reding
parent 1001354ca3
commit 9376cad207
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/tegra/dpaux.c
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@ -539,9 +539,9 @@ static int tegra_dpaux_probe(struct platform_device *pdev)
dpaux->desc.owner = THIS_MODULE; dpaux->desc.owner = THIS_MODULE;
dpaux->pinctrl = devm_pinctrl_register(&pdev->dev, &dpaux->desc, dpaux); 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"); dev_err(&pdev->dev, "failed to register pincontrol\n");
return -ENODEV; return PTR_ERR(dpaux->pinctrl);
} }
#endif #endif
/* enable and clear all interrupts */ /* enable and clear all interrupts */