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tty: vt/keyboard: simplify returns from vt_do_kbkeycode_ioctl()

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Return immediately when something goes wrong in vt_do_kbkeycode_ioctl().
This makes the code flow more obvious.

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Link: https://patch.msgid.link/20251119100140.830761-8-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby (SUSE)
2025-11-19 11:01:37 +01:00
committed by Greg Kroah-Hartman
parent bfb24564b5
commit d139b31f86
1 changed files with 9 additions and 9 deletions
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18
drivers/tty/vt/keyboard.c
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@@ -1879,27 +1879,27 @@ int vt_do_kdskbmeta(unsigned int console, unsigned int arg)
return ret;
}
int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc,
int perm)
int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc, int perm)
{
struct kbkeycode tmp;
int kc = 0;
int kc;
if (copy_from_user(&tmp, user_kbkc, sizeof(struct kbkeycode)))
return -EFAULT;
switch (cmd) {
case KDGETKEYCODE:
kc = getkeycode(tmp.scancode);
if (kc >= 0)
kc = put_user(kc, &user_kbkc->keycode);
break;
if (kc < 0)
return kc;
return put_user(kc, &user_kbkc->keycode);
case KDSETKEYCODE:
if (!perm)
return -EPERM;
kc = setkeycode(tmp.scancode, tmp.keycode);
break;
return setkeycode(tmp.scancode, tmp.keycode);
}
return kc;
return 0;
}
static unsigned short vt_kdgkbent(unsigned char kbdmode, unsigned char idx,