cifs: use PTR_ERR_OR_ZERO() to simplify code

Chen Zhou · smfrench · commit 050d2a8b6992 · 2020-01-26T19:24:17.000-06:00
PTR_ERR_OR_ZERO contains if(IS_ERR(...)) + PTR_ERR, just use
PTR_ERR_OR_ZERO directly.

Signed-off-by: Chen Zhou &lt;chenzhou10@huawei.com&gt;
Signed-off-by: Steve French &lt;stfrench@microsoft.com&gt;
Reviewed-by: Paulo Alcantara (SUSE) &lt;pc@cjr.nz&gt;
diff --git a/fs/cifs/dfs_cache.c b/fs/cifs/dfs_cache.c
@@ -661,7 +661,7 @@ static int __dfs_cache_find(const unsigned int xid, struct cifs_ses *ses,
 	 */
 	if (noreq) {
 		up_read(&htable_rw_lock);
-		return IS_ERR(ce) ? PTR_ERR(ce) : 0;
+		return PTR_ERR_OR_ZERO(ce);
 	}
 
 	if (!IS_ERR(ce)) {

Original file line number	Diff line number	Diff line change
`@@ -661,7 +661,7 @@ static int __dfs_cache_find(const unsigned int xid, struct cifs_ses *ses,`
`661`	`661`	`*/`
`662`	`662`	`if (noreq) {`
`663`	`663`	`up_read(&htable_rw_lock);`
`664`		`- return IS_ERR(ce) ? PTR_ERR(ce) : 0;`
	`664`	`+ return PTR_ERR_OR_ZERO(ce);`
`665`	`665`	`}`
`666`	`666`
`667`	`667`	`if (!IS_ERR(ce)) {`