From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Mon, 7 Aug 2017 13:16:16 +0000 (+0200)
Subject: s390/vmcp: return -ENOTTY for unknown ioctl commands
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4ae48c046814d8b0386883aeb9060b08f46a2ec1;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

s390/vmcp: return -ENOTTY for unknown ioctl commands

Return -ENOTTY for unknown ioctl commands instead of
-ENOIOCTLCMD. This isn't that much of difference, since common code
will translate -ENOIOCTLCMD to -ENOTTY anyway, but this way it seems
to be more obvious what is happening (at least to me).

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

diff --git a/drivers/s390/char/vmcp.c b/drivers/s390/char/vmcp.c
index 18b30119a70e..30fd474c86b3 100644
--- a/drivers/s390/char/vmcp.c
+++ b/drivers/s390/char/vmcp.c
@@ -231,7 +231,7 @@ static long vmcp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 		return put_user(temp, argp);
 	default:
 		mutex_unlock(&session->mutex);
-		return -ENOIOCTLCMD;
+		return -ENOTTY;
 	}
 }