diff options
Diffstat (limited to 'drivers/tc')
| -rw-r--r-- | drivers/tc/zs.c | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/drivers/tc/zs.c b/drivers/tc/zs.c index a5dab1ac568c..0e302ae5924c 100644 --- a/drivers/tc/zs.c +++ b/drivers/tc/zs.c @@ -192,18 +192,6 @@ static void probe_sccs(void); static void change_speed(struct dec_serial *info); static void rs_wait_until_sent(struct tty_struct *tty, int timeout); -/* - * tmp_buf is used as a temporary buffer by serial_write. We need to - * lock it in case the copy_from_user blocks while swapping in a page, - * and some other program tries to do a serial write at the same time. - * Since the lock will only come under contention when the system is - * swapping and available memory is low, it makes sense to share one - * buffer across all the serial ports, since it significantly saves - * memory if large numbers of serial ports are open. - */ -static unsigned char tmp_buf[4096]; /* This is cheating */ -static DECLARE_MUTEX(tmp_buf_sem); - static inline int serial_paranoia_check(struct dec_serial *info, char *name, const char *routine) { |