diff options
| author | Arjan van de Ven <arjan@infradead.org> | 2006-01-12 18:44:32 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-01-12 18:44:32 +0000 |
| commit | f392ecfa12de9a2baf72789b00557bac040d6171 (patch) | |
| tree | e406fbff12d8b7fa173a23f871d1b3b24473d144 /drivers/serial/crisv10.c | |
| parent | 593195f9b2309693f27b402f34573f7920b82c3e (diff) | |
| download | lwn-f392ecfa12de9a2baf72789b00557bac040d6171.tar.gz lwn-f392ecfa12de9a2baf72789b00557bac040d6171.zip | |
[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.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/serial/crisv10.c b/drivers/serial/crisv10.c index 08c42c000188..be12623d8544 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) { |