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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>
hifive-unleashed-5.1
Alan Cox 2009-11-30 13:18:18 +00:00 committed by Greg Kroah-Hartman
parent 8482bcd585
commit f710ebd7f7
1 changed files with 2 additions and 14 deletions
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16
drivers/char/moxa.c
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@ -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: *
*****************************************************************************/