[PATCH cosmetic] Remove trailing newline in elevator switch error message

[Markus Trippelsdorf]

Trying to switch to a non-existing elevator currently results in garbled
dmesg output, e.g.:

 # echo "foo" > /sys/block/sda/queue/scheduler 

elevator: type foo not found
elevator: switch to foo
 failed

(note the unintended line break.)

Fix by stripping the trailing newline.

diff --git a/block/elevator.c b/block/elevator.c
index bf11e70f008b..4f13fcd3c626 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -1112,6 +1112,7 @@ static inline bool elv_support_iosched(struct 
request_queue *q)
 ssize_t elv_iosched_store(struct request_queue *q, const char *name,
                          size_t count)
 {
+       char elevator_name[ELV_NAME_MAX];
        int ret;
 
        if (!(q->mq_ops || q->request_fn) || !elv_support_iosched(q))
@@ -1121,7 +1122,9 @@ ssize_t elv_iosched_store(struct request_queue *q, const 
char *name,
        if (!ret)
                return count;
 
-       printk(KERN_ERR "elevator: switch to %s failed\n", name);
+       strlcpy(elevator_name, name, sizeof(elevator_name));
+       strstrip(elevator_name);
+       printk(KERN_ERR "elevator: switch to %s failed\n", elevator_name);
        return ret;
 }
 
-- 
Markus