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linux-next: build failure after merge of the akpm-current tree

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  linux-next: build failure after merge of the akpm-current tree Stephen Rothwell <sfr@canb.auug.org.au> - 2017-08-23 12:50 +0200
    Re: linux-next: build failure after merge of the akpm-current tree Andrew Morton <akpm@linux-foundation.org> - 2017-08-24 00:20 +0200

#1718237 — linux-next: build failure after merge of the akpm-current tree

Hi Andrew,

After merging the akpm-current tree, today's linux-next build (mips
defconfig) failed like this:

In file included from include/linux/selection.h:11:0,
                 from drivers/video/console/newport_con.c:16:
include/linux/vt_buffer.h: In function 'scr_memsetw':
include/linux/vt_buffer.h:34:2: error: implicit declaration of function 'memset16' [-Werror=implicit-function-declaration]
include/linux/vt_buffer.h: In function 'scr_memcpyw':
include/linux/vt_buffer.h:47:2: error: implicit declaration of function 'memcpy' [-Werror=implicit-function-declaration]
include/linux/vt_buffer.h: In function 'scr_memmovew':
include/linux/vt_buffer.h:66:2: error: implicit declaration of function 'memmove' [-Werror=implicit-function-declaration]
In file included from include/linux/string.h:18:0,
                 from include/linux/bitmap.h:8,
                 from include/linux/cpumask.h:11,
                 from arch/mips/include/asm/processor.h:15,
                 from arch/mips/include/asm/thread_info.h:15,
                 from include/linux/thread_info.h:37,
                 from include/asm-generic/preempt.h:4,
                 from ./arch/mips/include/generated/asm/preempt.h:1,
                 from include/linux/preempt.h:80,
                 from include/linux/spinlock.h:50,
                 from include/linux/wait.h:8,
                 from include/linux/wait_bit.h:7,
                 from include/linux/fs.h:5,
                 from include/linux/tty.h:4,
                 from include/linux/vt_kern.h:11,
                 from drivers/video/console/newport_con.c:18:
arch/mips/include/asm/string.h: At top level:
arch/mips/include/asm/string.h:138:14: error: conflicting types for 'memcpy'
include/linux/vt_buffer.h:47:2: note: previous implicit declaration of 'memcpy' was here
arch/mips/include/asm/string.h:141:14: error: conflicting types for 'memmove'
include/linux/vt_buffer.h:66:2: note: previous implicit declaration of 'memmove' was here
In file included from include/linux/bitmap.h:8:0,
                 from include/linux/cpumask.h:11,
                 from arch/mips/include/asm/processor.h:15,
                 from arch/mips/include/asm/thread_info.h:15,
                 from include/linux/thread_info.h:37,
                 from include/asm-generic/preempt.h:4,
                 from ./arch/mips/include/generated/asm/preempt.h:1,
                 from include/linux/preempt.h:80,
                 from include/linux/spinlock.h:50,
                 from include/linux/wait.h:8,
                 from include/linux/wait_bit.h:7,
                 from include/linux/fs.h:5,
                 from include/linux/tty.h:4,
                 from include/linux/vt_kern.h:11,
                 from drivers/video/console/newport_con.c:18:
include/linux/string.h:104:14: error: conflicting types for 'memset16'
include/linux/vt_buffer.h:34:2: note: previous implicit declaration of 'memset16' was here

Caused by commit

  3cd3d896e663 ("vga: optimise console scrolling")

-- 
Cheers,
Stephen Rothwell

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#1718671

On Wed, 23 Aug 2017 20:41:59 +1000 Stephen Rothwell <sfr@canb.auug.org.au> wrote:

> After merging the akpm-current tree, today's linux-next build (mips
> defconfig) failed like this:
> 
> In file included from include/linux/selection.h:11:0,
>                  from drivers/video/console/newport_con.c:16:
> include/linux/vt_buffer.h: In function 'scr_memsetw':
> include/linux/vt_buffer.h:34:2: error: implicit declaration of function 'memset16' [-Werror=implicit-function-declaration]
> include/linux/vt_buffer.h: In function 'scr_memcpyw':
> include/linux/vt_buffer.h:47:2: error: implicit declaration of function 'memcpy' [-Werror=implicit-function-declaration]
> include/linux/vt_buffer.h: In function 'scr_memmovew':
> include/linux/vt_buffer.h:66:2: error: implicit declaration of function 'memmove' [-Werror=implicit-function-declaration]
> In file included from include/linux/string.h:18:0,

This?

--- a/include/linux/vt_buffer.h~vga-optimise-console-scrolling-fix
+++ a/include/linux/vt_buffer.h
@@ -13,6 +13,7 @@
 #ifndef _LINUX_VT_BUFFER_H_
 #define _LINUX_VT_BUFFER_H_
 
+#include <linux/string.h>
 
 #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_MDA_CONSOLE)
 #include <asm/vga.h>
_

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