If there is no driver match function, the driver core assumes that each candidate pair (driver, device) matches, see driver_match_device(). Drop the matrix bus's match function that always returned 1 and so implements the same behaviour as when there is no match function Signed-off-by: Lizhe <sensor1010@xxxxxxx> --- drivers/s390/crypto/vfio_ap_drv.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/s390/crypto/vfio_ap_drv.c b/drivers/s390/crypto/vfio_ap_drv.c index 997b524bdd2b..9341c000da41 100644 --- a/drivers/s390/crypto/vfio_ap_drv.c +++ b/drivers/s390/crypto/vfio_ap_drv.c @@ -59,14 +59,8 @@ static void vfio_ap_matrix_dev_release(struct device *dev) kfree(matrix_dev); } -static int matrix_bus_match(struct device *dev, struct device_driver *drv) -{ - return 1; -} - static struct bus_type matrix_bus = { .name = "matrix", - .match = &matrix_bus_match, }; static struct device_driver matrix_driver = { -- 2.34.1