bus: ti-sysc: Use PTR_ERR_OR_ZERO() to simplify code

zhengbin13 · tmlind · commit 3f2c420596be · 2019-12-12T09:06:40.000-08:00
Fixes coccicheck warning:

drivers/bus/ti-sysc.c:506:1-3: WARNING: PTR_ERR_OR_ZERO can be used

Reported-by: Hulk Robot &lt;hulkci@huawei.com&gt;
Signed-off-by: zhengbin &lt;zhengbin13@huawei.com&gt;
Signed-off-by: Tony Lindgren &lt;tony@atomide.com&gt;
diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
@@ -503,10 +503,8 @@ static int sysc_init_resets(struct sysc *ddata)
 {
 	ddata->rsts =
 		devm_reset_control_get_optional_shared(ddata->dev, "rstctrl");
-	if (IS_ERR(ddata->rsts))
-		return PTR_ERR(ddata->rsts);
 
-	return 0;
+	return PTR_ERR_OR_ZERO(ddata->rsts);
 }
 
 /**

Original file line number	Diff line number	Diff line change
`@@ -503,10 +503,8 @@ static int sysc_init_resets(struct sysc *ddata)`
`503`	`503`	`{`
`504`	`504`	`ddata->rsts =`
`505`	`505`	`devm_reset_control_get_optional_shared(ddata->dev, "rstctrl");`
`506`		`- if (IS_ERR(ddata->rsts))`
`507`		`- return PTR_ERR(ddata->rsts);`
`508`	`506`
`509`		`- return 0;`
	`507`	`+ return PTR_ERR_OR_ZERO(ddata->rsts);`
`510`	`508`	`}`
`511`	`509`
`512`	`510`	`/**`