linux-kernel - [PATCH] arc: kernel: add default extern variable 'screen

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Date:	Wed, 23 Oct 2013 19:09:49 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	"vgupta@...opsys.com" <vgupta@...opsys.com>,
	Arnd Bergmann <arnd@...db.de>, sachin.kamat@...aro.org,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	James Hogan <james.hogan@...tec.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] arc: kernel: add default extern variable 'screen_info' in
 "setup.c"

Add default 'screen_info' just like some of other architectures (e.g.
cris, score, sh, tile), or can not pass compiling.

The related error (with allmodconfig):

  drivers/built-in.o: In function `vgacon_save_screen':
  drivers/video/console/vgacon.c:1347: undefined reference to `screen_info'
  drivers/video/console/vgacon.c:1348: undefined reference to `screen_info'
  drivers/built-in.o: In function `vgacon_resize':
  drivers/video/console/vgacon.c:1314: undefined reference to `screen_info'
  drivers/video/console/vgacon.c:1315: undefined reference to `screen_info'
  drivers/built-in.o: In function `vgacon_switch':
  drivers/video/console/vgacon.c:820: undefined reference to `screen_info'
  drivers/built-in.o:drivers/video/console/vgacon.c:840: more undefined references to `screen_info' follow


Signed-off-by: Chen Gang <gang.chen@...anux.com>
---
 arch/arc/kernel/setup.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
index 2c68bc7e..07130f3 100644
--- a/arch/arc/kernel/setup.c
+++ b/arch/arc/kernel/setup.c
@@ -15,6 +15,7 @@
 #include <linux/cpu.h>
 #include <linux/of_fdt.h>
 #include <linux/cache.h>
+#include <linux/screen_info.h>
 #include <asm/sections.h>
 #include <asm/arcregs.h>
 #include <asm/tlb.h>
@@ -37,6 +38,8 @@ struct task_struct *_current_task[NR_CPUS];	/* For stack switching */
 
 struct cpuinfo_arc cpuinfo_arc700[NR_CPUS];
 
+struct screen_info screen_info;
+
 
 void read_arc_build_cfg_regs(void)
 {
-- 
1.7.7.6
--
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