[PATCH] w1: Use mutexes instead of semaphores.
Use mutexes instead of semaphores.
Patch tested on x86_64 and i386 with test bus master driver.
Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/w1/masters/ds2490.c b/drivers/w1/masters/ds2490.c
index 6376778..299e274 100644
--- a/drivers/w1/masters/ds2490.c
+++ b/drivers/w1/masters/ds2490.c
@@ -169,7 +169,7 @@
static int ds_send_control_cmd(struct ds_device *, u16, u16);
static LIST_HEAD(ds_devices);
-static DECLARE_MUTEX(ds_mutex);
+static DEFINE_MUTEX(ds_mutex);
static struct usb_driver ds_driver = {
.name = "DS9490R",
@@ -887,9 +887,9 @@
if (err)
goto err_out_clear;
- down(&ds_mutex);
+ mutex_lock(&ds_mutex);
list_add_tail(&dev->ds_entry, &ds_devices);
- up(&ds_mutex);
+ mutex_unlock(&ds_mutex);
return 0;
@@ -909,9 +909,9 @@
if (!dev)
return;
- down(&ds_mutex);
+ mutex_lock(&ds_mutex);
list_del(&dev->ds_entry);
- up(&ds_mutex);
+ mutex_unlock(&ds_mutex);
ds_w1_fini(dev);