From: H. Peter Anvin <hpa@zytor.com>
Date: Fri, 19 Feb 2010 21:21:38 +0000 (-0800)
Subject: x86, setup: Don't skip mode setting for the standard VGA modes
X-Git-Tag: v2.6.34-rc1~251^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8e92dc767abb58357e696a48fc3d8ce615a9c01a;p=pandora-kernel.git

x86, setup: Don't skip mode setting for the standard VGA modes

The code for setting standard VGA modes probes for the current mode,
and skips the mode setting if the mode is 3 (color text 80x25) or 7
(mono text 80x25).  Unfortunately, there are BIOSes, including the
VMware BIOS, which report the previous mode if function 0F is queried
while the screen is in a VESA mode, and of course, nothing can help a
mode poked directly into the hardware.

As such, the safe option is to set the mode anyway, and only query to
see if we should be using mode 7 rather than mode 3.  People who don't
want any mode setting at all should probably use vga=0x0f04
(VIDEO_CURRENT_MODE).  It's possible that should be the kernel
default.

Reported-by Rene Arends <R.R.Arends@hro.nl>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
LKML-Reference: <tip-*@git.kernel.org>
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