Commit 2aa9c5db authored by Daniel Walker's avatar Daniel Walker Committed by Linus Torvalds
Browse files

uml: port mutex conversion



The port_sem is already used as a mutex since it's using DECLARE_MUTEX(), but
the underlying construct is still a semaphore ..  This patch switches it over
to a struct mutex.
Signed-off-by: default avatarDaniel Walker <dwalker@mvista.com>
Signed-off-by: default avatarJeff Dike <jdike@linux.intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent e98fa281
......@@ -6,6 +6,7 @@
#include "linux/completion.h"
#include "linux/interrupt.h"
#include "linux/list.h"
#include "linux/mutex.h"
#include "asm/atomic.h"
#include "init.h"
#include "irq_kern.h"
......@@ -120,7 +121,7 @@ static int port_accept(struct port_list *port)
return 0;
}
static DECLARE_MUTEX(ports_sem);
static DEFINE_MUTEX(ports_mutex);
static LIST_HEAD(ports);
static void port_work_proc(struct work_struct *unused)
......@@ -161,7 +162,7 @@ void *port_data(int port_num)
struct port_dev *dev = NULL;
int fd;
down(&ports_sem);
mutex_lock(&ports_mutex);
list_for_each(ele, &ports) {
port = list_entry(ele, struct port_list, list);
if (port->port == port_num)
......@@ -216,7 +217,7 @@ void *port_data(int port_num)
out_free:
kfree(port);
out:
up(&ports_sem);
mutex_unlock(&ports_mutex);
return dev;
}
......
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