linux-kernel - [PATCH] ACPI / memhotplug: Fix a stale pointer in error path

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Message-Id: <1373474833-14047-1-git-send-email-toshi.kani@hp.com>
Date:	Wed, 10 Jul 2013 10:47:13 -0600
From:	Toshi Kani <toshi.kani@...com>
To:	rjw@...k.pl
Cc:	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	Toshi Kani <toshi.kani@...com>
Subject: [PATCH] ACPI / memhotplug: Fix a stale pointer in error path

device->driver_data needs to be cleared when releasing its data,
mem_device, in an error path of acpi_memory_device_add().

Signed-off-by: Toshi Kani <toshi.kani@...com>
---
 drivers/acpi/acpi_memhotplug.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index c711d11..999adb5 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -323,6 +323,7 @@ static int acpi_memory_device_add(struct acpi_device *device,
 	/* Get the range from the _CRS */
 	result = acpi_memory_get_device_resources(mem_device);
 	if (result) {
+		device->driver_data = NULL;
 		kfree(mem_device);
 		return result;
 	}
--
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