dmanegine: idxd: open code the dsa_drv registration

Don't need a wrapper to register the driver. Just do it directly.

Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/162637465319.744545.16325178432532362906.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

drivers/dma/idxd/idxd.h

@@ -56,6 +56,8 @@ struct idxd_device_driver {
 	struct device_driver drv;
 };
 
+extern struct idxd_device_driver dsa_drv;
+
 struct idxd_irq_entry {
 	struct idxd_device *idxd;
 	int id;

drivers/dma/idxd/init.c

@@ -840,9 +840,9 @@ static int __init idxd_init_module(void)
 	if (err < 0)
 		return err;
 
-	err = idxd_register_driver();
+	err = idxd_driver_register(&dsa_drv);
 	if (err < 0)
-		goto err_idxd_driver_register;
+		goto err_dsa_driver_register;
 
 	err = idxd_cdev_register();
 	if (err)
@@ -857,16 +857,16 @@ static int __init idxd_init_module(void)
 err_pci_register:
 	idxd_cdev_remove();
 err_cdev_register:
-	idxd_unregister_driver();
-err_idxd_driver_register:
+	idxd_driver_unregister(&dsa_drv);
+err_dsa_driver_register:
 	idxd_unregister_bus_type();
 	return err;
 }
 module_init(idxd_init_module);
 
 static void __exit idxd_exit_module(void)
 {
-	idxd_unregister_driver();
+	idxd_driver_unregister(&dsa_drv);
 	pci_unregister_driver(&idxd_pci_driver);
 	idxd_cdev_remove();
 	idxd_unregister_bus_type();

drivers/dma/idxd/sysfs.c

@@ -79,23 +79,12 @@ static void idxd_dsa_drv_remove(struct idxd_dev *idxd_dev)
 	}
 }
 
-static struct idxd_device_driver dsa_drv = {
+struct idxd_device_driver dsa_drv = {
 	.name = "dsa",
 	.probe = idxd_dsa_drv_probe,
 	.remove = idxd_dsa_drv_remove,
 };
 
-/* IDXD generic driver setup */
-int idxd_register_driver(void)
-{
-	return idxd_driver_register(&dsa_drv);
-}
-
-void idxd_unregister_driver(void)
-{
-	idxd_driver_unregister(&dsa_drv);
-}
-
 /* IDXD engine attributes */
 static ssize_t engine_group_id_show(struct device *dev,
 				    struct device_attribute *attr, char *buf)