Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932456AbbFEJRX (ORCPT ); Fri, 5 Jun 2015 05:17:23 -0400 Received: from mail-wg0-f45.google.com ([74.125.82.45]:36600 "EHLO mail-wg0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753450AbbFEJRR (ORCPT ); Fri, 5 Jun 2015 05:17:17 -0400 Date: Fri, 5 Jun 2015 10:17:13 +0100 From: Matt Fleming To: Ethan Zhao Cc: tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, fabf@skynet.be, x86@kernel.org, linux-kernel@vger.kernel.org, ethan.kernel@gmail.com, David Herrmann , linux-efi@vger.kernel.org Subject: Re: [PATCH] x86/simplefb: simplefb was broken on Oracle and HP system, skip VIDEO_TYPE_EFI Message-ID: <20150605091713.GD6826@codeblueprint.co.uk> References: <1432712748-11344-1-git-send-email-ethan.zhao@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1432712748-11344-1-git-send-email-ethan.zhao@oracle.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1670 Lines: 47 (Cc'ing David) On Wed, 27 May, at 04:45:48PM, Ethan Zhao wrote: > 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 > Tested-by: Kunlun Lao > --- > 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) { This patch makes sense to me, but I'd really like David to fill us in on the rationale for including VIDEO_TYPE_EFI in the simplefb list in first place, and whether he's aware of any platforms that require simplefb for UEFI. David? -- Matt Fleming, Intel Open Source Technology Center -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/