scx200_acb: Use mutex instead of semaphore
The scx200_acb driver use a semaphore as mutex. Use the mutex API
instead of the (binary) semaphore.
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Jordan Crouse <jordan.crouse@amd.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
diff --git a/drivers/i2c/busses/scx200_acb.c b/drivers/i2c/busses/scx200_acb.c
index 0d6bd4f..dc64f8b 100644
--- a/drivers/i2c/busses/scx200_acb.c
+++ b/drivers/i2c/busses/scx200_acb.c
@@ -388,7 +388,7 @@
};
static struct scx200_acb_iface *scx200_acb_list;
-static DECLARE_MUTEX(scx200_acb_list_mutex);
+static DEFINE_MUTEX(scx200_acb_list_mutex);
static __init int scx200_acb_probe(struct scx200_acb_iface *iface)
{
@@ -472,10 +472,10 @@
return -ENODEV;
}
- down(&scx200_acb_list_mutex);
+ mutex_lock(&scx200_acb_list_mutex);
iface->next = scx200_acb_list;
scx200_acb_list = iface;
- up(&scx200_acb_list_mutex);
+ mutex_unlock(&scx200_acb_list_mutex);
return 0;
}
@@ -633,10 +633,10 @@
{
struct scx200_acb_iface *iface;
- down(&scx200_acb_list_mutex);
+ mutex_lock(&scx200_acb_list_mutex);
while ((iface = scx200_acb_list) != NULL) {
scx200_acb_list = iface->next;
- up(&scx200_acb_list_mutex);
+ mutex_unlock(&scx200_acb_list_mutex);
i2c_del_adapter(&iface->adapter);
@@ -648,9 +648,9 @@
release_region(iface->base, 8);
kfree(iface);
- down(&scx200_acb_list_mutex);
+ mutex_lock(&scx200_acb_list_mutex);
}
- up(&scx200_acb_list_mutex);
+ mutex_unlock(&scx200_acb_list_mutex);
}
module_init(scx200_acb_init);