aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/char/vt.c
diff options
context:
space:
mode:
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 0edbbc3fa9d8..bbd9fc412877 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -86,6 +86,7 @@
86#include <linux/mm.h> 86#include <linux/mm.h>
87#include <linux/console.h> 87#include <linux/console.h>
88#include <linux/init.h> 88#include <linux/init.h>
89#include <linux/mutex.h>
89#include <linux/vt_kern.h> 90#include <linux/vt_kern.h>
90#include <linux/selection.h> 91#include <linux/selection.h>
91#include <linux/tiocl.h> 92#include <linux/tiocl.h>
@@ -1952,7 +1953,7 @@ static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, int c)
1952 * kernel memory allocation is available. 1953 * kernel memory allocation is available.
1953 */ 1954 */
1954char con_buf[CON_BUF_SIZE]; 1955char con_buf[CON_BUF_SIZE];
1955DECLARE_MUTEX(con_buf_sem); 1956DEFINE_MUTEX(con_buf_mtx);
1956 1957
1957/* is_double_width() is based on the wcwidth() implementation by 1958/* is_double_width() is based on the wcwidth() implementation by
1958 * Markus Kuhn -- 2003-05-20 (Unicode 4.0) 1959 * 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
2049 2050
2050 /* At this point 'buf' is guaranteed to be a kernel buffer 2051 /* At this point 'buf' is guaranteed to be a kernel buffer
2051 * and therefore no access to userspace (and therefore sleeping) 2052 * and therefore no access to userspace (and therefore sleeping)
2052 * will be needed. The con_buf_sem serializes all tty based 2053 * will be needed. The con_buf_mtx serializes all tty based
2053 * console rendering and vcs write/read operations. We hold 2054 * console rendering and vcs write/read operations. We hold
2054 * the console spinlock during the entire write. 2055 * the console spinlock during the entire write.
2055 */ 2056 */