[PATCH] USB: convert a bunch of USB semaphores to mutexes

the patch below converts a bunch of semaphores-used-as-mutex in the USB
code to mutexes

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/usb/media/sn9c102.h b/drivers/usb/media/sn9c102.h
index 17d60c1eea7e..59e44be27cb4 100644
--- a/drivers/usb/media/sn9c102.h
+++ b/drivers/usb/media/sn9c102.h
@@ -33,6 +33,7 @@
 #include <linux/types.h>
 #include <linux/param.h>
 #include <linux/rwsem.h>
+#include <linux/mutex.h>
 #include <asm/semaphore.h>
 
 #include "sn9c102_sensor.h"
@@ -109,7 +110,7 @@ struct sn9c102_module_param {
         u8 force_munmap;
 };
 
-static DECLARE_MUTEX(sn9c102_sysfs_lock);
+static DEFINE_MUTEX(sn9c102_sysfs_lock);
 static DECLARE_RWSEM(sn9c102_disconnect);
 
 struct sn9c102_device {
@@ -141,7 +142,7 @@ struct sn9c102_device {
         enum sn9c102_dev_state state;
         u8 users;
 
-        struct semaphore dev_sem, fileop_sem;
+        struct mutex dev_mutex, fileop_mutex;
         spinlock_t queue_lock;
         wait_queue_head_t open, wait_frame, wait_stream;
 };