[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, 5 insertions, 4 deletions

diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c
index 4ef5527028c5..5f11e19eaae3 100644
--- a/drivers/usb/storage/scsiglue.c
+++ b/drivers/usb/storage/scsiglue.c
@@ -47,6 +47,7 @@
 
 #include <linux/slab.h>
 #include <linux/module.h>
+#include <linux/mutex.h>
 
 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
@@ -271,9 +272,9 @@ static int device_reset(struct scsi_cmnd *srb)
         US_DEBUGP("%s called\n", __FUNCTION__);
 
         /* lock the device pointers and do the reset */
-        down(&(us->dev_semaphore));
+        mutex_lock(&(us->dev_mutex));
         result = us->transport_reset(us);
-        up(&(us->dev_semaphore));
+        mutex_unlock(&us->dev_mutex);
 
         return result < 0 ? FAILED : SUCCESS;
 }
@@ -286,9 +287,9 @@ static int bus_reset(struct scsi_cmnd *srb)
 
         US_DEBUGP("%s called\n", __FUNCTION__);
 
-        down(&(us->dev_semaphore));
+        mutex_lock(&(us->dev_mutex));
         result = usb_stor_port_reset(us);
-        up(&(us->dev_semaphore));
+        mutex_unlock(&us->dev_mutex);
 
         return result < 0 ? FAILED : SUCCESS;
 }