On Thursday, December 02, 2010, Stephen Rothwell wrote:
> Hi Len,
>
> After merging the acpi tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
>
> In file included from drivers/video/output.c:25:
> include/linux/video_output.h: In function 'video_output_register':
> include/linux/video_output.h:49: error: implicit declaration of function 'ERR_PTR'
> include/linux/video_output.h:49: warning: return makes pointer from integer without a cast
> In file included from drivers/video/output.c:27:
> include/linux/err.h: At top level:
> include/linux/err.h:22: error: conflicting types for 'ERR_PTR'
> include/linux/video_output.h:49: note: previous implicit declaration of 'ERR_PTR' was here
> drivers/video/output.c:84: error: redefinition of 'video_output_register'
> include/linux/video_output.h:44: note: previous definition of 'video_output_register' was here
> drivers/video/output.c:114: error: redefinition of 'video_output_unregister'
> include/linux/video_output.h:51: note: previous definition of 'video_output_unregister' was here
>
> Caused by commit 16d21716c8849c3283d1b9e590e6fe8d1966f4b7 ("ACPI: video:
> fix build for VIDEO_OUTPUT_CONTROL=n"). See Rule 1 in
> Documentation/SubmitChecklist.
>
> I have used the version of the acpi tree from next-20101201 for today.
Something like this will help, perhaps:
---
include/linux/video_output.h | 1 +
1 file changed, 1 insertion(+)
Index: linux-2.6/include/linux/video_output.h
===================================================================
--- linux-2.6.orig/include/linux/video_output.h
+++ linux-2.6/include/linux/video_output.h
@@ -23,6 +23,7 @@
#ifndef _LINUX_VIDEO_OUTPUT_H
#define _LINUX_VIDEO_OUTPUT_H
#include <linux/device.h>
+#include <linux/err.h>
struct output_device;
struct output_properties {
int (*set_state)(struct output_device *);
--
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