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use mutex instead of semaphore in virtual console driver

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The virtual console driver uses a semaphore as mutex.  Use the mutex API
instead of the (binary) semaphore.

Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Matthias Kaehlcke
2007-05-08 00:39:49 -07:00
committed by Linus Torvalds
parent 159dde9369
commit c831c338f0
3 changed files with 15 additions and 11 deletions
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3
include/linux/vt_kern.h
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@@ -9,6 +9,7 @@
#include <linux/vt.h>
#include <linux/kd.h>
#include <linux/tty.h>
#include <linux/mutex.h>
#include <linux/console_struct.h>
#include <linux/mm.h>
@@ -82,7 +83,7 @@ void reset_vc(struct vc_data *vc);
#define CON_BUF_SIZE (CONFIG_BASE_SMALL ? 256 : PAGE_SIZE)
extern char con_buf[CON_BUF_SIZE];
extern struct semaphore con_buf_sem;
extern struct mutex con_buf_mtx;
extern char vt_dont_switch;
struct vt_spawn_console {