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authorArjan van de Ven <arjan@infradead.org>2006-01-12 18:44:32 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-01-12 18:44:32 +0000
commitf392ecfa12de9a2baf72789b00557bac040d6171 (patch)
treee406fbff12d8b7fa173a23f871d1b3b24473d144 /drivers/serial/crisv10.c
parent593195f9b2309693f27b402f34573f7920b82c3e (diff)
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[SERIAL] turn serial semaphores into mutexes
Turn several drivers/serial/ semaphores-used-as-mutex into mutexes Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/serial/crisv10.c')
-rw-r--r--drivers/serial/crisv10.c11
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/serial/crisv10.c b/drivers/serial/crisv10.c
index 08c42c0..be12623 100644
--- a/drivers/serial/crisv10.c
+++ b/drivers/serial/crisv10.c
@@ -442,6 +442,7 @@ static char *serial_version = "$Revision: 1.25 $";
#include <linux/init.h>
#include <asm/uaccess.h>
#include <linux/kernel.h>
+#include <linux/mutex.h>
#include <asm/io.h>
#include <asm/irq.h>
@@ -1315,11 +1316,7 @@ static const struct control_pins e100_modem_pins[NR_PORTS] =
* memory if large numbers of serial ports are open.
*/
static unsigned char *tmp_buf;
-#ifdef DECLARE_MUTEX
-static DECLARE_MUTEX(tmp_buf_sem);
-#else
-static struct semaphore tmp_buf_sem = MUTEX;
-#endif
+static DEFINE_MUTEX(tmp_buf_mutex);
/* Calculate the chartime depending on baudrate, numbor of bits etc. */
static void update_char_time(struct e100_serial * info)
@@ -3661,7 +3658,7 @@ rs_raw_write(struct tty_struct * tty, int from_user,
* design.
*/
if (from_user) {
- down(&tmp_buf_sem);
+ mutex_lock(&tmp_buf_mutex);
while (1) {
int c1;
c = CIRC_SPACE_TO_END(info->xmit.head,
@@ -3692,7 +3689,7 @@ rs_raw_write(struct tty_struct * tty, int from_user,
count -= c;
ret += c;
}
- up(&tmp_buf_sem);
+ mutex_unlock(&tmp_buf_mutex);
} else {
cli();
while (count) {