s390/sclp: handle default case in sclp memory notifier

sumanthkorikkar · Vasily Gorbik · commit e3f4170ccf20 · 2023-10-25T15:08:29.000+02:00
When new memory notifier types are added in common code and
unimplemented on s390, return success instead of EINVAL return code.

This prevents breakage when new memory notifier types are added.

Reviewed-by: Heiko Carstens &lt;hca@linux.ibm.com&gt;
Signed-off-by: Sumanth Korikkar &lt;sumanthk@linux.ibm.com&gt;
Signed-off-by: Vasily Gorbik &lt;gor@linux.ibm.com&gt;
diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
@@ -353,7 +353,6 @@ static int sclp_mem_notifier(struct notifier_block *nb,
 		sclp_mem_change_state(start, size, 0);
 		break;
 	default:
-		rc = -EINVAL;
 		break;
 	}
 	mutex_unlock(&sclp_mem_mutex);

Original file line number	Diff line number	Diff line change
`@@ -353,7 +353,6 @@ static int sclp_mem_notifier(struct notifier_block *nb,`
`353`	`353`	`sclp_mem_change_state(start, size, 0);`
`354`	`354`	`break;`
`355`	`355`	`default:`
`356`		`- rc = -EINVAL;`
`357`	`356`	`break;`
`358`	`357`	`}`
`359`	`358`	`mutex_unlock(&sclp_mem_mutex);`