Messages in this thread Patch in this message | | | Date | Sat, 29 Dec 2007 09:20:21 +0800 | From | Dave Young <> | Subject | [PATCH 12/12] usb : Use mutex instead of semaphore in driver core |
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Signed-off-by: Dave Young <hidave.darkstar@gmail.com>
--- include/linux/usb.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff -upr linux/include/linux/usb.h linux.new/include/linux/usb.h --- linux/include/linux/usb.h 2007-12-28 10:50:31.000000000 +0800 +++ linux.new/include/linux/usb.h 2007-12-28 10:52:31.000000000 +0800 @@ -441,9 +441,9 @@ extern struct usb_device *usb_get_dev(st extern void usb_put_dev(struct usb_device *dev); /* USB device locking */ -#define usb_lock_device(udev) down(&(udev)->dev.sem) -#define usb_unlock_device(udev) up(&(udev)->dev.sem) -#define usb_trylock_device(udev) down_trylock(&(udev)->dev.sem) +#define usb_lock_device(udev) mutex_lock(&(udev)->dev.mutex) +#define usb_unlock_device(udev) mutex_unlock(&(udev)->dev.mutex) +#define usb_trylock_device(udev) mutex_trylock(&(udev)->dev.mutex) extern int usb_lock_device_for_reset(struct usb_device *udev, const struct usb_interface *iface);
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