From: Ian Abbott <abbotti@mev.co.uk>
Date: Thu, 27 Jun 2013 13:50:57 +0000 (+0100)
Subject: staging: comedi: return void from comedi_driver_unregister()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=99c0e2691736d56190764bfdc59f11b090cda4ff;p=linux-beck.git

staging: comedi: return void from comedi_driver_unregister()

'Unregister' functions generally return `void`.
`comedi_driver_unregister()` currently returns an `int` errno value.
Nothing looks at the return value.  Change the return type to `void`.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h
index ab278942ebd1..98058b9097e6 100644
--- a/drivers/staging/comedi/comedidev.h
+++ b/drivers/staging/comedi/comedidev.h
@@ -363,7 +363,7 @@ int comedi_auto_config(struct device *, struct comedi_driver *,
 void comedi_auto_unconfig(struct device *);
 
 int comedi_driver_register(struct comedi_driver *);
-int comedi_driver_unregister(struct comedi_driver *);
+void comedi_driver_unregister(struct comedi_driver *);
 
 /**
  * module_comedi_driver() - Helper macro for registering a comedi driver
diff --git a/drivers/staging/comedi/drivers.c b/drivers/staging/comedi/drivers.c
index a15934f94ab0..ba5d6d927a49 100644
--- a/drivers/staging/comedi/drivers.c
+++ b/drivers/staging/comedi/drivers.c
@@ -559,7 +559,7 @@ int comedi_driver_register(struct comedi_driver *driver)
 }
 EXPORT_SYMBOL_GPL(comedi_driver_register);
 
-int comedi_driver_unregister(struct comedi_driver *driver)
+void comedi_driver_unregister(struct comedi_driver *driver)
 {
 	struct comedi_driver *prev;
 	int i;
@@ -584,15 +584,14 @@ int comedi_driver_unregister(struct comedi_driver *driver)
 
 	if (comedi_drivers == driver) {
 		comedi_drivers = driver->next;
-		return 0;
+		return;
 	}
 
 	for (prev = comedi_drivers; prev->next; prev = prev->next) {
 		if (prev->next == driver) {
 			prev->next = driver->next;
-			return 0;
+			return;
 		}
 	}
-	return -EINVAL;
 }
 EXPORT_SYMBOL_GPL(comedi_driver_unregister);