staging: dgnc: unregister pci driver

We may choose to load the module without the hardware present. That will register the pci driver but since probe will not succeed so dgnc_NumBoards will be 0. Now if we unload the module then the pci driver stays registered as dgnc_NumBoards is 0. And if we try to load the module again it fails with the error: "Driver 'dgnc' is already registered." Signed-off-by: Sudip Mukherjee <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
patjak · Mar 12, 2016 · b3ca2e0 · b3ca2e0
1 parent e9961fc
commit b3ca2e0
Showing 1 changed file with 1 addition and 2 deletions.
diff --git a/drivers/staging/dgnc/dgnc_driver.c b/drivers/staging/dgnc/dgnc_driver.c
@@ -156,8 +156,7 @@ static void dgnc_cleanup_module(void)
 
 	dgnc_tty_post_uninit();
 
-	if (dgnc_NumBoards)
-		pci_unregister_driver(&dgnc_driver);
+	pci_unregister_driver(&dgnc_driver);
 }
 
 /*