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[PATCH] sem2mutex: serial ->port_write_mutex 

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ingo Molnar 2006-03-23 03:00:44 -08:00 committed by Linus Torvalds
parent 1e7933defd
commit 81861d78c9
5 changed files with 14 additions and 12 deletions
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14
drivers/char/generic_serial.c
View File

@ -48,8 +48,8 @@ static int gs_debug;
#define NEW_WRITE_LOCKING 1
#if NEW_WRITE_LOCKING
#define DECL /* Nothing */
#define LOCKIT down (& port->port_write_sem);
#define RELEASEIT up (&port->port_write_sem);
#define LOCKIT mutex_lock(& port->port_write_mutex);
#define RELEASEIT mutex_unlock(&port->port_write_mutex);
#else
#define DECL unsigned long flags;
#define LOCKIT save_flags (flags);cli ()
@ -124,14 +124,14 @@ int gs_write(struct tty_struct * tty,
/* get exclusive "write" access to this port (problem 3) */
/* This is not a spinlock because we can have a disk access (page
fault) in copy_from_user */
down (& port->port_write_sem);
mutex_lock(& port->port_write_mutex);
while (1) {
c = count;
/* This is safe because we "OWN" the "head". Noone else can
change the "head": we own the port_write_sem. */
change the "head": we own the port_write_mutex. */
/* Don't overrun the end of the buffer */
t = SERIAL_XMIT_SIZE - port->xmit_head;
if (t < c) c = t;
@ -153,7 +153,7 @@ int gs_write(struct tty_struct * tty,
count -= c;
total += c;
}
up (& port->port_write_sem);
mutex_unlock(& port->port_write_mutex);
gs_dprintk (GS_DEBUG_WRITE, "write: interrupts are %s\n",
(port->flags & GS_TX_INTEN)?"enabled": "disabled");
@ -214,7 +214,7 @@ int gs_write(struct tty_struct * tty,
c = count;
/* This is safe because we "OWN" the "head". Noone else can
change the "head": we own the port_write_sem. */
change the "head": we own the port_write_mutex. */
/* Don't overrun the end of the buffer */
t = SERIAL_XMIT_SIZE - port->xmit_head;
if (t < c) c = t;
@ -888,7 +888,7 @@ int gs_init_port(struct gs_port *port)
spin_lock_irqsave (&port->driver_lock, flags);
if (port->tty)
clear_bit(TTY_IO_ERROR, &port->tty->flags);
init_MUTEX(&port->port_write_sem);
mutex_init(&port->port_write_mutex);
port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
spin_unlock_irqrestore(&port->driver_lock, flags);
gs_set_termios(port->tty, NULL);

4
drivers/char/ser_a2232.c
View File

@ -97,7 +97,7 @@
#include <asm/amigahw.h>
#include <linux/zorro.h>
#include <asm/irq.h>
#include <asm/semaphore.h>
#include <linux/mutex.h>
#include <linux/delay.h>
@ -654,7 +654,7 @@ static void a2232_init_portstructs(void)
port->gs.closing_wait = 30 * HZ;
port->gs.rd = &a2232_real_driver;
#ifdef NEW_WRITE_LOCKING
init_MUTEX(&(port->gs.port_write_sem));
init_MUTEX(&(port->gs.port_write_mutex));
#endif
init_waitqueue_head(&port->gs.open_wait);
init_waitqueue_head(&port->gs.close_wait);

2
drivers/char/sx.c
View File

@ -2318,7 +2318,7 @@ static int sx_init_portstructs (int nboards, int nports)
port->board = board;
port->gs.rd = &sx_real_driver;
#ifdef NEW_WRITE_LOCKING
port->gs.port_write_sem = MUTEX;
port->gs.port_write_mutex = MUTEX;
#endif
port->gs.driver_lock = SPIN_LOCK_UNLOCKED;
/*

2
drivers/char/vme_scc.c
View File

@ -184,7 +184,7 @@ static void scc_init_portstructs(void)
port->gs.closing_wait = 30 * HZ;
port->gs.rd = &scc_real_driver;
#ifdef NEW_WRITE_LOCKING
port->gs.port_write_sem = MUTEX;
port->gs.port_write_mutex = MUTEX;
#endif
init_waitqueue_head(&port->gs.open_wait);
init_waitqueue_head(&port->gs.close_wait);

4
include/linux/generic_serial.h
View File

@ -12,6 +12,8 @@
#ifndef GENERIC_SERIAL_H
#define GENERIC_SERIAL_H
#include <linux/mutex.h>
struct real_driver {
void (*disable_tx_interrupts) (void *);
void (*enable_tx_interrupts) (void *);
@ -34,7 +36,7 @@ struct gs_port {
int xmit_head;
int xmit_tail;
int xmit_cnt;
struct semaphore port_write_sem;
struct mutex port_write_mutex;
int flags;
wait_queue_head_t open_wait;
wait_queue_head_t close_wait;