linux-kernel - [PATCH v2] arch/unicore32/kernel/setup.c: add generic 'screen

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Date:	Thu, 22 May 2014 07:08:23 +0800
From:	Chen Gang <gang.chen.5i5j@...il.com>
To:	Guan Xuetao <gxt@...c.pku.edu.cn>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH v2] arch/unicore32/kernel/setup.c: add generic 'screen_info'
 to avoid compiling failure

Add generic 'screen_info' just like another architectures have done
(e.g. tile, sh, score, ia64, hexagon, and cris).

The related error (with allmodconfig under unicore32):

    LD      init/built-in.o
  drivers/built-in.o: In function `vgacon_save_screen':
  powercap_sys.c:(.text+0x21788): undefined reference to `screen_info'
  drivers/built-in.o: In function `vgacon_resize':
  powercap_sys.c:(.text+0x21b54): undefined reference to `screen_info'
  drivers/built-in.o: In function `vgacon_switch':
  powercap_sys.c:(.text+0x21cb4): undefined reference to `screen_info'
  drivers/built-in.o: In function `vgacon_init':
  powercap_sys.c:(.text+0x2296c): undefined reference to `screen_info'
  drivers/built-in.o: In function `vgacon_startup':
  powercap_sys.c:(.text+0x22e80): undefined reference to `screen_info'


Signed-off-by: Chen Gang <gang.chen.5i5j@...il.com>
---
 arch/unicore32/kernel/setup.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/unicore32/kernel/setup.c b/arch/unicore32/kernel/setup.c
index 87adbf5..3fa317f 100644
--- a/arch/unicore32/kernel/setup.c
+++ b/arch/unicore32/kernel/setup.c
@@ -53,6 +53,10 @@ struct stack {
 
 static struct stack stacks[NR_CPUS];
 
+#ifdef CONFIG_VGA_CONSOLE
+struct screen_info screen_info;
+#endif
+
 char elf_platform[ELF_PLATFORM_SIZE];
 EXPORT_SYMBOL(elf_platform);
 
-- 
1.9.2.459.g68773ac
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