[PATCH] drm/tegra: dpaux: Modify error handling

From: Amitoj Kaur Chawla
Date: Sat Aug 13 2016 - 00:00:44 EST


devm_pinctrl_register returns an ERR_PTR in case of error and should
have an IS_ERR check instead of a null check.

The Coccinelle semantic patch used to make this change is as follows:
@@
expression e;
@@

e = devm_pinxtrl_register(...);
if(
- !e
+ IS_ERR(e)
)
{
<+...
return
- ...
+ PTR_ERR(e)
;
...+>
}

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@xxxxxxxxx>
---
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 */
--
1.9.1