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path: root/drivers/usb/core/usb.c
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Diffstat (limited to 'drivers/usb/core/usb.c')
-rw-r--r--drivers/usb/core/usb.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 13d1d36..d7352aa 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -33,6 +33,7 @@
#include <linux/errno.h>
#include <linux/smp_lock.h>
#include <linux/usb.h>
+#include <linux/mutex.h>
#include <asm/io.h>
#include <asm/scatterlist.h>
@@ -639,7 +640,7 @@ struct usb_device *usb_find_device(u16 vendor_id, u16 product_id)
struct usb_bus *bus;
struct usb_device *dev = NULL;
- down(&usb_bus_list_lock);
+ mutex_lock(&usb_bus_list_lock);
for (buslist = usb_bus_list.next;
buslist != &usb_bus_list;
buslist = buslist->next) {
@@ -653,7 +654,7 @@ struct usb_device *usb_find_device(u16 vendor_id, u16 product_id)
goto exit;
}
exit:
- up(&usb_bus_list_lock);
+ mutex_unlock(&usb_bus_list_lock);
return dev;
}