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authorMatthias Kaehlcke <matthias.kaehlcke@gmail.com>2007-05-08 00:39:49 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-08 11:15:33 -0700
commitc831c338f0ad299fcd1592c6e4f30657480f39af (patch)
treee2562fbcffe80e9d78255a92aab7f7db1f761e9d /drivers/char/vt.c
parent159dde93692ef549a0b2012c9f25feb4df638c9c (diff)
downloadop-kernel-dev-c831c338f0ad299fcd1592c6e4f30657480f39af.zip
op-kernel-dev-c831c338f0ad299fcd1592c6e4f30657480f39af.tar.gz
use mutex instead of semaphore in virtual console driver
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>
Diffstat (limited to 'drivers/char/vt.c')
-rw-r--r--drivers/char/vt.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 0edbbc3..bbd9fc4 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -86,6 +86,7 @@
#include <linux/mm.h>
#include <linux/console.h>
#include <linux/init.h>
+#include <linux/mutex.h>
#include <linux/vt_kern.h>
#include <linux/selection.h>
#include <linux/tiocl.h>
@@ -1952,7 +1953,7 @@ static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, int c)
* kernel memory allocation is available.
*/
char con_buf[CON_BUF_SIZE];
-DECLARE_MUTEX(con_buf_sem);
+DEFINE_MUTEX(con_buf_mtx);
/* is_double_width() is based on the wcwidth() implementation by
* Markus Kuhn -- 2003-05-20 (Unicode 4.0)
@@ -2049,7 +2050,7 @@ static int do_con_write(struct tty_struct *tty, const unsigned char *buf, int co
/* At this point 'buf' is guaranteed to be a kernel buffer
* and therefore no access to userspace (and therefore sleeping)
- * will be needed. The con_buf_sem serializes all tty based
+ * will be needed. The con_buf_mtx serializes all tty based
* console rendering and vcs write/read operations. We hold
* the console spinlock during the entire write.
*/
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