[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>
diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c
index 4ef5527..5f11e19 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 @@
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 @@
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;
}