vhost: Use ERR_CAST inlined function instead of ERR_PTR(PTR_ERR(...))

Pei Xiao · mstsirkin · commit 32d89a405adc · 2025-08-01T09:11:08.000-04:00
cocci warning:
./kernel/vhost_task.c:148:9-16: WARNING: ERR_CAST can be used with tsk

Use ERR_CAST inlined function instead of ERR_PTR(PTR_ERR(...)).

Signed-off-by: Pei Xiao &lt;xiaopei01@kylinos.cn&gt;
Message-Id: &lt;1a8499a5da53e4f72cf21aca044ae4b26db8b2ad.1749020055.git.xiaopei01@kylinos.cn&gt;
Signed-off-by: Michael S. Tsirkin &lt;mst@redhat.com&gt;
diff --git a/kernel/vhost_task.c b/kernel/vhost_task.c
@@ -145,7 +145,7 @@ struct vhost_task *vhost_task_create(bool (*fn)(void *),
 	tsk = copy_process(NULL, 0, NUMA_NO_NODE, &args);
 	if (IS_ERR(tsk)) {
 		kfree(vtsk);
-		return ERR_PTR(PTR_ERR(tsk));
+		return ERR_CAST(tsk);
 	}
 
 	vtsk->task = tsk;

Original file line number	Diff line number	Diff line change
`@@ -145,7 +145,7 @@ struct vhost_task vhost_task_create(bool (fn)(void *),`
`145`	`145`	`tsk = copy_process(NULL, 0, NUMA_NO_NODE, &args);`
`146`	`146`	`if (IS_ERR(tsk)) {`
`147`	`147`	`kfree(vtsk);`
`148`		`- return ERR_PTR(PTR_ERR(tsk));`
	`148`	`+ return ERR_CAST(tsk);`
`149`	`149`	`}`
`150`	`150`
`151`	`151`	`vtsk->task = tsk;`