linux-kernel - [02/12] driver core fixes: device_register() retval check in platform.c

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Message-ID: <20060913183837.5742c8ef@gondolin.boeblingen.de.ibm.com>
Date:	Wed, 13 Sep 2006 18:38:37 +0200
From:	Cornelia Huck <cornelia.huck@...ibm.com>
To:	Greg K-H <greg@...ah.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: [02/12] driver core fixes: device_register() retval check in
 platform.c

From: Cornelia Huck <cornelia.huck@...ibm.com>

Check the return value of device_register() in platform_bus_init().

Signed-off-by: Cornelia Huck <cornelia.huck@...ibm.com>

 platform.c |   11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

--- linux-2.6.18-rc6/drivers/base/platform.c	2006-09-12 14:12:10.000000000 +0200
+++ linux-2.6.18-rc6+CH/drivers/base/platform.c	2006-09-12 16:25:50.000000000 +0200
@@ -563,8 +563,15 @@ EXPORT_SYMBOL_GPL(platform_bus_type);
 
 int __init platform_bus_init(void)
 {
-	device_register(&platform_bus);
-	return bus_register(&platform_bus_type);
+	int error;
+
+	error = device_register(&platform_bus);
+	if (error)
+		return error;
+	error =  bus_register(&platform_bus_type);
+	if (error)
+		device_unregister(&platform_bus);
+	return error;
 }
 
 #ifndef ARCH_HAS_DMA_GET_REQUIRED_MASK
-
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