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Commit ac801022 authored by Konrad Rzeszutek Wilk's avatar Konrad Rzeszutek Wilk Committed by David Vrabel
Browse files

driver core: Provide an wrapper around the mutex to do lockdep warnings 



Instead of open-coding it in drivers that want to double check
that their functions are indeed holding the device lock.

Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Suggested-by: default avatarDavid Vrabel <david.vrabel@citrix.com>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarDavid Vrabel <david.vrabel@citrix.com>
parent e8801a74

drivers/xen/xen-pciback/pci_stub.c

+1 −1
Original line number Diff line number Diff line
@@ -278,7 +278,7 @@ void pcistub_put_pci_dev(struct pci_dev *dev) 
	/* Cleanup our device

	 * (so it's ready for the next domain)

	 */

	lockdep_assert_held(&dev->dev.mutex);

	device_lock_assert(&dev->dev);

	__pci_reset_function_locked(dev);

	pci_restore_state(dev);

include/linux/device.h

+5 −0
Original line number Diff line number Diff line
@@ -911,6 +911,11 @@ static inline void device_unlock(struct device *dev) 
	mutex_unlock(&dev->mutex);

}



static inline void device_lock_assert(struct device *dev)

{

	lockdep_assert_held(&dev->mutex);

}



void driver_init(void);



/*