linux-kernel - Re: [PATCH v3] x86: sysfb: remove sysfb when probing real hw

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CANq1E4Ss30G72t3R1iza9vOO7ESYQynjS74mB+nJ-zT2zAvyzQ@mail.gmail.com>
Date:	Thu, 19 Dec 2013 18:03:08 +0100
From:	David Herrmann <dh.herrmann@...il.com>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	Takashi Iwai <tiwai@...e.de>,
	Stephen Warren <swarren@...dotorg.org>,
	"the arch/x86 maintainers" <x86@...nel.org>,
	"linux-fbdev@...r.kernel.org" <linux-fbdev@...r.kernel.org>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	stable <stable@...r.kernel.org>
Subject: Re: [PATCH v3] x86: sysfb: remove sysfb when probing real hw

Hi

On Thu, Dec 19, 2013 at 5:36 PM, Ingo Molnar <mingo@...nel.org> wrote:
>
> * David Herrmann <dh.herrmann@...il.com> wrote:
>
>> --- a/drivers/video/fbmem.c
>> +++ b/drivers/video/fbmem.c
>> @@ -35,6 +35,9 @@
>>
>>  #include <asm/fb.h>
>>
>> +#if IS_ENABLED(CONFIG_X86)
>> +#include <asm/sysfb.h>
>> +#endif
>
> I think this can be written as:
>
> #ifdef CONFIG_X86
> # include <asm/sysfb.h>
> #endif
>
> also ... the dependency on a large, unrelated option like CONFIG_X86
> looks pretty ugly here - is there no other, more specific CONFIG_
> option that can be used here - such as CONFIG_FB_SIMPLE or
> CONFIG_X86_SYSFB?
>
>> +#if IS_ENABLED(CONFIG_X86)
>> +     sysfb_unregister(apert, primary);
>> +#endif
>
> Ditto.

CONFIG_X86 is probably never 'm'.. will fix that.
It was CONFIG_X86_SYSFB before and that works, too, but the broader
X86 seemed more appropriate as sysfb is available on all x86.

Note that I have patches here locally which move
sysfb_register/unregister to drivers/video/sysfb.c and add
include/linux/sysfb.h with dummies if CONFIG_SYSFB is not selected to
avoid the #ifdef. This will allow other architectures to do
gfx-hand-over, too. They seem too big for stable, though. That's why I
split them up and added it to x86/kernel/sysfb.c first.

Thanks
David
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/