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From: Jiri Slaby <jslaby@suse.cz>
To: gregkh@linuxfoundation.org
Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
	Jiri Slaby <jslaby@suse.cz>
Subject: [PATCH 30/38] vt_ioctl: eliminate use of uival and ucval
Date: Mon, 15 Jun 2020 09:49:02 +0200	[thread overview]
Message-ID: <20200615074910.19267-30-jslaby@suse.cz> (raw)
In-Reply-To: <20200615074910.19267-1-jslaby@suse.cz>

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>
---
 drivers/tty/vt/vt_ioctl.c | 19 ++++++-------------
 1 file 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,
-- 
2.27.0


  parent reply	other threads:[~2020-06-15  7:50 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-15  7:48 [PATCH 01/38] vc: separate state Jiri Slaby
2020-06-15  7:48 ` [PATCH 02/38] vt: introduce enum vc_intensity for intensity Jiri Slaby
2020-06-15  7:48 ` [PATCH 03/38] vc: switch state to bool Jiri Slaby
2020-06-15  7:48 ` [PATCH 04/38] vt: deduplicate setGx code Jiri Slaby
2020-06-15  7:48 ` [PATCH 05/38] vt: switch G0/1_charset to an array Jiri Slaby
2020-06-15  7:48 ` [PATCH 06/38] vt: convert vc_tab_stop to bitmap Jiri Slaby
2020-06-15  7:48 ` [PATCH 07/38] vt: remove 25 years stale comment Jiri Slaby
2020-06-15  7:48 ` [PATCH 08/38] vt: use tty_insert_flip_string in respond_string Jiri Slaby
2020-06-15  7:48 ` [PATCH 09/38] vt: get rid of VT10.ID macros Jiri Slaby
2020-06-15  7:48 ` [PATCH 10/38] vt: move vc_translate to vt.c and rename it Jiri Slaby
2020-06-15  7:48 ` [PATCH 11/38] vt: use modern types in do_con_write Jiri Slaby
2020-06-15  7:48 ` [PATCH 12/38] vt: separate unicode handling into vc_translate_unicode Jiri Slaby
2020-06-15  7:48 ` [PATCH 13/38] vt: rearrange vc_translate_unicode Jiri Slaby
2020-06-15  7:48 ` [PATCH 14/38] vt: extract attribute inversion to vc_invert_attr Jiri Slaby
2020-06-15  7:48 ` [PATCH 15/38] vt: move rescan_last_byte label earlier Jiri Slaby
2020-06-15  7:48 ` [PATCH 16/38] vc: move translation out of do_con_write Jiri Slaby
2020-06-15  7:48 ` [PATCH 17/38] vc: introduce struct vc_draw_region Jiri Slaby
2020-06-15  7:48 ` [PATCH 18/38] vc: extract detecting control characters from do_con_write Jiri Slaby
2020-06-15  7:48 ` [PATCH 19/38] vc: move normal char processing " Jiri Slaby
2020-06-15  7:48 ` [PATCH 20/38] vc: simplify condition in vc_con_write_normal Jiri Slaby
2020-06-15  7:48 ` [PATCH 21/38] vt: simplify vc_attr handling " Jiri Slaby
2020-06-15  7:48 ` [PATCH 22/38] vt: make tc write more obvious " Jiri Slaby
2020-06-15  7:48 ` [PATCH 23/38] vt: synchronize types and use min in csi_X Jiri Slaby
2020-06-15  7:48 ` [PATCH 24/38] vt: whitespace and paren cleanup in add_softcursor Jiri Slaby
2020-06-15  7:48 ` [PATCH 25/38] vt: redefine world of cursor macros Jiri Slaby
2020-06-15  7:48 ` [PATCH 26/38] vt: use newly defined CUR_* macros Jiri Slaby
2020-06-15 20:31   ` Helge Deller
2020-06-15  7:48 ` [PATCH 27/38] vt: remove superfluous parens in invert_screen and build_attr Jiri Slaby
2020-06-15  7:49 ` [PATCH 28/38] vt: simplify noncolor attributes in build_attr Jiri Slaby
2020-06-15  7:49 ` [PATCH 29/38] vt_ioctl: eliminate ret & breaks in vt_ioctl Jiri Slaby
2020-06-15  7:49 ` Jiri Slaby [this message]
2020-06-15  7:49 ` [PATCH 31/38] vt_ioctl: move K* ioctls to a separate function Jiri Slaby
2020-06-15  7:49 ` [PATCH 32/38] vt_ioctl: move io " Jiri Slaby
2020-06-15  7:49 ` [PATCH 33/38] vt_ioctl: move vt_setactivate out of vt_ioctl Jiri Slaby
2020-06-15  7:49 ` [PATCH 34/38] vt_ioctl: move vt_reldisp " Jiri Slaby
2020-06-15  7:49 ` [PATCH 35/38] vt_ioctl: move vt_resizex " Jiri Slaby
2020-06-15  7:49 ` [PATCH 36/38] vt_ioctl: move vt_io_fontreset out of vt_io_ioctl Jiri Slaby
2020-06-15  7:49 ` [PATCH 37/38] vt_ioctl: move vt_kdsetmode out of vt_k_ioctl Jiri Slaby
2020-06-15  7:49 ` [PATCH 38/38] vt_ioctl: move perm checks level up Jiri Slaby

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