From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Jiri Slaby <jslaby@suse.cz>
Subject: [PATCH 5.5 06/30] vt: ioctl, switch VT_IS_IN_USE and VT_BUSY to inlines
Date: Wed, 1 Apr 2020 18:17:10 +0200 [thread overview]
Message-ID: <20200401161419.384314315@linuxfoundation.org> (raw)
In-Reply-To: <20200401161414.345528747@linuxfoundation.org>
From: Jiri Slaby <jslaby@suse.cz>
commit e587e8f17433ddb26954f0edf5b2f95c42155ae9 upstream.
These two were macros. Switch them to static inlines, so that it's more
understandable what they are doing.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20200219073951.16151-2-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/tty/vt/vt_ioctl.c | 29 ++++++++++++++++++++++-------
1 file changed, 22 insertions(+), 7 deletions(-)
--- a/drivers/tty/vt/vt_ioctl.c
+++ b/drivers/tty/vt/vt_ioctl.c
@@ -40,10 +40,25 @@
#include <linux/selection.h>
char vt_dont_switch;
-extern struct tty_driver *console_driver;
-#define VT_IS_IN_USE(i) (console_driver->ttys[i] && console_driver->ttys[i]->count)
-#define VT_BUSY(i) (VT_IS_IN_USE(i) || i == fg_console || vc_is_sel(vc_cons[i].d))
+static inline bool vt_in_use(unsigned int i)
+{
+ extern struct tty_driver *console_driver;
+
+ return console_driver->ttys[i] && console_driver->ttys[i]->count;
+}
+
+static inline bool vt_busy(int i)
+{
+ if (vt_in_use(i))
+ return true;
+ if (i == fg_console)
+ return true;
+ if (vc_is_sel(vc_cons[i].d))
+ return true;
+
+ return false;
+}
/*
* Console (vt and kd) routines, as defined by USL SVR4 manual, and by
@@ -289,7 +304,7 @@ static int vt_disallocate(unsigned int v
int ret = 0;
console_lock();
- if (VT_BUSY(vc_num))
+ if (vt_busy(vc_num))
ret = -EBUSY;
else if (vc_num)
vc = vc_deallocate(vc_num);
@@ -311,7 +326,7 @@ static void vt_disallocate_all(void)
console_lock();
for (i = 1; i < MAX_NR_CONSOLES; i++)
- if (!VT_BUSY(i))
+ if (!vt_busy(i))
vc[i] = vc_deallocate(i);
else
vc[i] = NULL;
@@ -648,7 +663,7 @@ int vt_ioctl(struct tty_struct *tty,
state = 1; /* /dev/tty0 is always open */
for (i = 0, mask = 2; i < MAX_NR_CONSOLES && mask;
++i, mask <<= 1)
- if (VT_IS_IN_USE(i))
+ if (vt_in_use(i))
state |= mask;
ret = put_user(state, &vtstat->v_state);
}
@@ -661,7 +676,7 @@ int vt_ioctl(struct tty_struct *tty,
case VT_OPENQRY:
/* FIXME: locking ? - but then this is a stupid API */
for (i = 0; i < MAX_NR_CONSOLES; ++i)
- if (! VT_IS_IN_USE(i))
+ if (!vt_in_use(i))
break;
uival = i < MAX_NR_CONSOLES ? (i+1) : -1;
goto setint;
next prev parent reply other threads:[~2020-04-01 16:20 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-01 16:17 [PATCH 5.5 00/30] 5.5.15-rc1 review Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 01/30] bpf: update jmp32 test cases to fix range bound deduction Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 02/30] mac80211: Check port authorization in the ieee80211_tx_dequeue() case Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 03/30] mac80211: fix authentication with iwlwifi/mvm Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 04/30] serial: sprd: Fix a dereference warning Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 05/30] vt: selection, introduce vc_is_sel Greg Kroah-Hartman
2020-04-01 16:17 ` Greg Kroah-Hartman [this message]
2020-04-01 16:17 ` [PATCH 5.5 07/30] vt: switch vt_dont_switch to bool Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 08/30] vt: vt_ioctl: remove unnecessary console allocation checks Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 09/30] vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 10/30] vt: vt_ioctl: fix use-after-free in vt_in_use() Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 11/30] platform/x86: pmc_atom: Add Lex 2I385SW to critclk_systems DMI table Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 12/30] bpf: Explicitly memset the bpf_attr structure Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 13/30] bpf: Explicitly memset some bpf info structures declared on the stack Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 14/30] iwlwifi: dont send GEO_TX_POWER_LIMIT if no wgds table Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 15/30] gpiolib: acpi: Add quirk to ignore EC wakeups on HP x2 10 CHT + AXP288 model Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 16/30] net: ks8851-ml: Fix IO operations, again Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 17/30] clk: imx: Align imx sc clock msg structs to 4 Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 18/30] clk: imx: Align imx sc clock parent " Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 19/30] clk: ti: am43xx: Fix clock parent for RTC clock Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 20/30] libceph: fix alloc_msg_with_page_vector() memory leaks Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 21/30] arm64: alternative: fix build with clang integrated assembler Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 22/30] perf map: Fix off by one in strncpy() size argument Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 23/30] ARM: dts: oxnas: Fix clear-mask property Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 24/30] ARM: dts: bcm283x: Fix vc4s firmware bus DMA limitations Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 25/30] ARM: bcm2835-rpi-zero-w: Add missing pinctrl name Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 26/30] ARM: dts: imx6: phycore-som: fix arm and soc minimum voltage Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 27/30] ARM: dts: N900: fix onenand timings Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 28/30] ARM: dts: sun8i: r40: Move AHCI device node based on address order Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 29/30] arm64: dts: ls1043a-rdb: correct RGMII delay mode to rgmii-id Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 30/30] arm64: dts: ls1046ardb: set RGMII interfaces to RGMII_ID mode Greg Kroah-Hartman
2020-04-02 0:13 ` [PATCH 5.5 00/30] 5.5.15-rc1 review Guenter Roeck
2020-04-02 7:10 ` Jon Hunter
2020-04-02 9:29 ` Naresh Kamboju
2020-04-02 16:45 ` shuah
2020-04-02 18:43 ` Greg Kroah-Hartman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200401161419.384314315@linuxfoundation.org \
--to=gregkh@linuxfoundation.org \
--cc=jslaby@suse.cz \
--cc=linux-kernel@vger.kernel.org \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).