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From: Yu Luming <luming.yu-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: akpm-3NddpPZAyC0@public.gmane.org,
	acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
	len.brown-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org,
	trenn-l3A5Bk7waGM@public.gmane.org,
	nacc-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org
Subject: [PATCH]  Fix Null point in video/lcd/brightness
Date: Sat, 19 Nov 2005 22:32:55 +0800	[thread overview]
Message-ID: <200511192232.56139.luming.yu@gmail.com> (raw)

 Fix Null point in video/lcd/brightness
http://bugzilla.kernel.org/show_bug.cgi?id=5571

Signed-off-by: Luming Yu
Cc: "Brown, Len"
Signed-off-by: Thomas Renninger <trenn-l3A5Bk7waGM@public.gmane.org>
Signed-off-by: Nishanth Aravamudan <nacc-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
---
 video.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/acpi/video.c.orig	2005-10-28 02:02:08.000000000 +0200
+++ a/drivers/acpi/video.c	2005-11-04 14:53:25.000000000 +0100
@@ -813,7 +813,7 @@
 
 	ACPI_FUNCTION_TRACE("acpi_video_device_write_brightness");
 
-	if (!dev || count + 1 > sizeof str)
+	if (!dev || !dev->brightness || count + 1 > sizeof str)
 		return_VALUE(-EINVAL);
 
 	if (copy_from_user(str, buffer, count))



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                 reply	other threads:[~2005-11-19 14:32 UTC|newest]

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