arch/um: remove unused varible err in remove_files_and_dir()

Alex Shi · jmberg-intel · commit 68e25613ed4d · 2026-01-13T19:43:41.000+01:00
err is duplicated with errno, and never used; remove it. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Alex Shi <alexs@kernel.org> Link: https://patch.msgid.link/20260107064009.15380-1-alexs@kernel.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/arch/um/os-Linux/umid.c b/arch/um/os-Linux/umid.c
@@ -136,7 +136,7 @@ static int remove_files_and_dir(char *dir)
 static inline int is_umdir_used(char *dir)
 {
 	char pid[sizeof("nnnnnnnnn")], *end, *file;
-	int fd, p, n, err;
+	int fd, p, n;
 	size_t filelen = strlen(dir) + sizeof("/pid") + 1;
 
 	file = malloc(filelen);
@@ -155,7 +155,6 @@ static inline int is_umdir_used(char *dir)
 		goto out;
 	}
 
-	err = 0;
 	n = read(fd, pid, sizeof(pid));
 	if (n < 0) {
 		printk(UM_KERN_ERR "is_umdir_used : couldn't read pid file "

Original file line number	Diff line number	Diff line change
`@@ -136,7 +136,7 @@ static int remove_files_and_dir(char *dir)`
`136`	`136`	`static inline int is_umdir_used(char *dir)`
`137`	`137`	`{`
`138`	`138`	`char pid[sizeof("nnnnnnnnn")], end, file;`
`139`		`- int fd, p, n, err;`
	`139`	`+ int fd, p, n;`
`140`	`140`	`size_t filelen = strlen(dir) + sizeof("/pid") + 1;`
`141`	`141`
`142`	`142`	`file = malloc(filelen);`
`@@ -155,7 +155,6 @@ static inline int is_umdir_used(char *dir)`
`155`	`155`	`goto out;`
`156`	`156`	`}`
`157`	`157`
`158`		`- err = 0;`
`159`	`158`	`n = read(fd, pid, sizeof(pid));`
`160`	`159`	`if (n < 0) {`
`161`	`160`	`printk(UM_KERN_ERR "is_umdir_used : couldn't read pid file "`