staging: unisys: visorbus: check parahotplug_request_complete_result

This patch modifies the caller of parahotplug_request_complete()
to check the return value and return appropriate result.
Signed-off-by: Erik Arfvidson <erik.arfvidson@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Reviewed-by: Tim Sell <Timothy.Sell@unisys.com>
Acked-By: Neil Horman <nhorman@tuxdriver.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/unisys/visorbus/visorchipset.c

@@ -2036,11 +2036,14 @@ static ssize_t devicedisabled_store(struct device *dev,
 				    const char *buf, size_t count)
 {
 	unsigned int id;
+	int err;
 
 	if (kstrtouint(buf, 10, &id))
 		return -EINVAL;
 
-	parahotplug_request_complete(id, 0);
+	err = parahotplug_request_complete(id, 0);
+	if (err < 0)
+		return err;
 	return count;
 }