linux-kernel - [PATCH] x86/simplefb: simplefb was broken on Oracle and HP system, skip VIDEO_TYPE

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Date:	Wed, 27 May 2015 16:45:48 +0900
From:	Ethan Zhao <ethan.zhao@...cle.com>
To:	tglx@...utronix.de, mingo@...hat.com, hpa@...or.com, fabf@...net.be
Cc:	x86@...nel.org, linux-kernel@...r.kernel.org,
	ethan.kernel@...il.com, Ethan Zhao <ethan.zhao@...cle.com>
Subject: [PATCH] x86/simplefb: simplefb was broken on Oracle and HP system, skip VIDEO_TYPE_EFI

As descriped in https://bugzilla.kernel.org/show_bug.cgi?id=98721
When kernel 4.0.4 was tested on Oracle and HP system with UEFI mode, no output and
login on console.

Simplefb was broken on these systems when orig_video_isVGA is VIDEO_TYPE_EFI, so
skip it.

This patch was tested on Oracle Sun server X5-2 series and HP ProLiant DL380 Gen9
with kernel 4.0.4

Signed-off-by: Ethan Zhao <ethan.zhao@...cle.com>
Tested-by: Kunlun Lao <kunlun.lao@...cle.com>
---
 arch/x86/kernel/sysfb_simplefb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/sysfb_simplefb.c b/arch/x86/kernel/sysfb_simplefb.c
index 764a29f..f833502 100644
--- a/arch/x86/kernel/sysfb_simplefb.c
+++ b/arch/x86/kernel/sysfb_simplefb.c
@@ -36,7 +36,7 @@ __init bool parse_mode(const struct screen_info *si,
 	unsigned int i;
 
 	type = si->orig_video_isVGA;
-	if (type != VIDEO_TYPE_VLFB && type != VIDEO_TYPE_EFI)
+	if (type != VIDEO_TYPE_VLFB)
 		return false;
 
 	for (i = 0; i < ARRAY_SIZE(formats); ++i) {
-- 
1.8.3.1

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