linux-kernel - [PATCH 20/44] driver core/platform_device_add

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Date:	Thu, 19 May 2011 17:10:38 -0700
From:	Greg Kroah-Hartman <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org
Cc:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [PATCH 20/44] driver core/platform_device_add_resources: set resource to NULL if !res

From: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>

This makes the res = NULL case more consistant to the res != NULL case
as now both overwrite pdev->resource.

Reviewed-by: Viresh Kumar <viresh.kumar@...com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 drivers/base/platform.c |   19 +++++++++----------
 1 files changed, 9 insertions(+), 10 deletions(-)

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 58ad8e8..667f282 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -192,18 +192,17 @@ EXPORT_SYMBOL_GPL(platform_device_alloc);
 int platform_device_add_resources(struct platform_device *pdev,
 				  const struct resource *res, unsigned int num)
 {
-	struct resource *r;
+	struct resource *r = NULL;
 
-	if (!res)
-		return 0;
-
-	r = kmemdup(res, sizeof(struct resource) * num, GFP_KERNEL);
-	if (r) {
-		pdev->resource = r;
-		pdev->num_resources = num;
-		return 0;
+	if (res) {
+		r = kmemdup(res, sizeof(struct resource) * num, GFP_KERNEL);
+		if (!r)
+			return -ENOMEM;
 	}
-	return -ENOMEM;
+
+	pdev->resource = r;
+	pdev->num_resources = num;
+	return 0;
 }
 EXPORT_SYMBOL_GPL(platform_device_add_resources);
 
-- 
1.7.4.2

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