diff options
| author | Jiri Slaby <jslaby@suse.cz> | 2020-06-15 10:49:02 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-06-24 18:08:34 +0300 |
| commit | eca734d8f0043e9597c9426f829d48c381dbb388 (patch) | |
| tree | 485daee93b897a9db855b5df9056b3db60fadbab /drivers/tty/vt | |
| parent | 0ce8179e248023606980823d970252e715f9f504 (diff) | |
| download | linux-eca734d8f0043e9597c9426f829d48c381dbb388.tar.xz | |
vt_ioctl: eliminate use of uival and ucval
They were used for the first parameter of put_user. But put_user accepts
constants in the parameter and also determines the type only by the
second parameter. So we can safely drop these helpers and simplify the
code a bit.
Including the removal of set_int label.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20200615074910.19267-30-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/vt')
| -rw-r--r-- | drivers/tty/vt/vt_ioctl.c | 19 |
1 files changed, 6 insertions, 13 deletions
diff --git a/drivers/tty/vt/vt_ioctl.c b/drivers/tty/vt/vt_ioctl.c index 87fe088c3eb4..911edd8d1272 100644 --- a/drivers/tty/vt/vt_ioctl.c +++ b/drivers/tty/vt/vt_ioctl.c @@ -353,8 +353,6 @@ int vt_ioctl(struct tty_struct *tty, struct vc_data *vc = tty->driver_data; struct console_font_op op; /* used in multiple places here */ unsigned int console = vc->vc_num; - unsigned char ucval; - unsigned int uival; void __user *up = (void __user *)arg; int i, perm; int ret; @@ -406,8 +404,7 @@ int vt_ioctl(struct tty_struct *tty, /* * this is naïve. */ - ucval = KB_101; - return put_user(ucval, (char __user *)arg); + return put_user(KB_101, (char __user *)arg); /* * These cannot be implemented on any machine that implements @@ -495,8 +492,7 @@ int vt_ioctl(struct tty_struct *tty, break; case KDGETMODE: - uival = vc->vc_mode; - goto setint; + return put_user(vc->vc_mode, (int __user *)arg); case KDMAPDISP: case KDUNMAPDISP: @@ -516,8 +512,7 @@ int vt_ioctl(struct tty_struct *tty, break; case KDGKBMODE: - uival = vt_do_kdgkbmode(console); - return put_user(uival, (int __user *)arg); + return put_user(vt_do_kdgkbmode(console), (int __user *)arg); /* this could be folded into KDSKBMODE, but for compatibility reasons it is not so easy to fold KDGKBMETA into KDGKBMODE */ @@ -526,9 +521,7 @@ int vt_ioctl(struct tty_struct *tty, case KDGKBMETA: /* FIXME: should review whether this is worth locking */ - uival = vt_do_kdgkbmeta(console); - setint: - return put_user(uival, (int __user *)arg); + return put_user(vt_do_kdgkbmeta(console), (int __user *)arg); case KDGETKEYCODE: case KDSETKEYCODE: @@ -650,8 +643,8 @@ int vt_ioctl(struct tty_struct *tty, if (!vt_in_use(i)) break; console_unlock(); - uival = i < MAX_NR_CONSOLES ? (i+1) : -1; - goto setint; + i = i < MAX_NR_CONSOLES ? (i+1) : -1; + return put_user(i, (int __user *)arg); /* * ioctl(fd, VT_ACTIVATE, num) will cause us to switch to vt # num, |