[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/storage/usb.h b/drivers/usb/storage/usb.h
index 7259fd1f6b0d..009fb0953a56 100644
--- a/drivers/usb/storage/usb.h
+++ b/drivers/usb/storage/usb.h
@@ -49,6 +49,7 @@
 #include <linux/blkdev.h>
 #include <linux/smp_lock.h>
 #include <linux/completion.h>
+#include <linux/mutex.h>
 #include <scsi/scsi_host.h>
 
 struct us_data;
@@ -103,9 +104,9 @@ typedef void (*pm_hook)(struct us_data *, int);	/* power management hook */
 struct us_data {
         /* The device we're working with
          * It's important to note:
-         *    (o) you must hold dev_semaphore to change pusb_dev
+         *    (o) you must hold dev_mutex to change pusb_dev
          */
-        struct semaphore        dev_semaphore;   /* protect pusb_dev */
+        struct mutex            dev_mutex;       /* protect pusb_dev */
         struct usb_device       *pusb_dev;       /* this usb_device */
         struct usb_interface    *pusb_intf;      /* this interface */
         struct us_unusual_dev   *unusual_dev;    /* device-filter entry     */