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authorAlan Cox <alan@linux.intel.com>2009-11-30 13:18:18 +0000
committerGreg Kroah-Hartman <gregkh@suse.de>2009-12-11 15:18:08 -0800
commitf710ebd7f70801e31751f2c49fe4b92a477d24eb (patch)
tree4e1e022e477dd62b39c01fdab7fabbadc10352e8 /drivers/char/moxa.c
parent8482bcd58530ad5857d7187854132f2b846db681 (diff)
tty: moxa: Kill the use of lock_kernel
It isn't needed here any more Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/char/moxa.c')
-rw-r--r--drivers/char/moxa.c16
1 files changed, 2 insertions, 14 deletions
diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c
index ac06d0131db5..d53fac5229bf 100644
--- a/drivers/char/moxa.c
+++ b/drivers/char/moxa.c
@@ -34,7 +34,6 @@
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/major.h>
-#include <linux/smp_lock.h>
#include <linux/string.h>
#include <linux/fcntl.h>
#include <linux/ptrace.h>
@@ -202,7 +201,6 @@ static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear);
static void moxa_poll(unsigned long);
static void moxa_set_tty_param(struct tty_struct *, struct ktermios *);
-static void moxa_setup_empty_event(struct tty_struct *);
static void moxa_shutdown(struct tty_port *);
static int moxa_carrier_raised(struct tty_port *);
static void moxa_dtr_rts(struct tty_port *, int);
@@ -1251,17 +1249,13 @@ static int moxa_chars_in_buffer(struct tty_struct *tty)
struct moxa_port *ch = tty->driver_data;
int chars;
- lock_kernel();
chars = MoxaPortTxQueue(ch);
- if (chars) {
+ if (chars)
/*
* Make it possible to wakeup anything waiting for output
* in tty_ioctl.c, etc.
*/
- if (!test_bit(EMPTYWAIT, &ch->statusflags))
- moxa_setup_empty_event(tty);
- }
- unlock_kernel();
+ set_bit(EMPTYWAIT, &ch->statusflags);
return chars;
}
@@ -1503,12 +1497,6 @@ static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_term
tty_encode_baud_rate(tty, baud, baud);
}
-static void moxa_setup_empty_event(struct tty_struct *tty)
-{
- struct moxa_port *ch = tty->driver_data;
- set_bit(EMPTYWAIT, &ch->statusflags);
-}
-
/*****************************************************************************
* Driver level functions: *
*****************************************************************************/