From: Alexander van Heukelum <heukelum@mailshack.com>
Date: Sun, 6 Apr 2008 12:47:00 +0000 (+0200)
Subject: x86: remove superfluous initialisation in boot code.
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=03056c88cf65ec8375753900246b36ae1c4b8a33;p=linux-beck.git

x86: remove superfluous initialisation in boot code.

In arch/x86/boot/compressed/misc.c, the variable vidmem is
the only variable that ends up in de data segment. It's also
superfluous, because the first thing the code does is:

	if (RM_SCREEN_INFO.orig_video_mode == 7) {
		vidmem = (char *) 0xb0000;
		vidport = 0x3b4;
	} else {
		vidmem = (char *) 0xb8000;
		vidport = 0x3d4;
	}

This patch removes the initialisation.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c
index 9470a050f8a4..dad4e699f5a3 100644
--- a/arch/x86/boot/compressed/misc.c
+++ b/arch/x86/boot/compressed/misc.c
@@ -223,7 +223,7 @@ static memptr free_mem_end_ptr;
 #define HEAP_SIZE             0x4000
 #endif
 
-static char *vidmem = (char *)0xb8000;
+static char *vidmem;
 static int vidport;
 static int lines, cols;