linux-kernel - Re: [PATCH 1/2] fbdev: geode: don't build on UML

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Date:   Thu, 1 Dec 2022 08:57:14 +0100
From:   Helge Deller <deller@....de>
To:     Randy Dunlap <rdunlap@...radead.org>, linux-kernel@...r.kernel.org
Cc:     Johannes Berg <johannes@...solutions.net>,
        Richard Weinberger <richard@....at>,
        linux-um@...ts.infradead.org, Daniel Vetter <daniel@...ll.ch>,
        linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        Andres Salomon <dilinger@...ued.net>,
        linux-geode@...ts.infradead.org
Subject: Re: [PATCH 1/2] fbdev: geode: don't build on UML

On 11/30/22 22:55, Randy Dunlap wrote:
> The geode fbdev driver uses struct cpuinfo fields that are not present
> on ARCH=um, so don't allow this driver to be built on UML.
>
> Prevents these build errors:
>
> In file included from ../arch/x86/include/asm/olpc.h:7:0,
>                   from ../drivers/mfd/cs5535-mfd.c:17:
> ../arch/x86/include/asm/geode.h: In function ‘is_geode_gx’:
> ../arch/x86/include/asm/geode.h:16:24: error: ‘struct cpuinfo_um’ has no member named ‘x86_vendor’
>    return ((boot_cpu_data.x86_vendor == X86_VENDOR_NSC) &&
> ../arch/x86/include/asm/geode.h:16:39: error: ‘X86_VENDOR_NSC’ undeclared (first use in this function); did you mean ‘X86_VENDOR_ANY’?
>    return ((boot_cpu_data.x86_vendor == X86_VENDOR_NSC) &&
> ../arch/x86/include/asm/geode.h:17:17: error: ‘struct cpuinfo_um’ has no member named ‘x86’
>     (boot_cpu_data.x86 == 5) &&
> ../arch/x86/include/asm/geode.h:18:17: error: ‘struct cpuinfo_um’ has no member named ‘x86_model’
>     (boot_cpu_data.x86_model == 5));
> ../arch/x86/include/asm/geode.h: In function ‘is_geode_lx’:
> ../arch/x86/include/asm/geode.h:23:24: error: ‘struct cpuinfo_um’ has no member named ‘x86_vendor’
>    return ((boot_cpu_data.x86_vendor == X86_VENDOR_AMD) &&
> ../arch/x86/include/asm/geode.h:23:39: error: ‘X86_VENDOR_AMD’ undeclared (first use in this function); did you mean ‘X86_VENDOR_ANY’?
>    return ((boot_cpu_data.x86_vendor == X86_VENDOR_AMD) &&
> ../arch/x86/include/asm/geode.h:24:17: error: ‘struct cpuinfo_um’ has no member named ‘x86’
>     (boot_cpu_data.x86 == 5) &&
> ../arch/x86/include/asm/geode.h:25:17: error: ‘struct cpuinfo_um’ has no member named ‘x86_model’
>     (boot_cpu_data.x86_model == 10));
>
> Fixes: 68f5d3f3b654 ("um: add PCI over virtio emulation driver")
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> Cc: Johannes Berg <johannes@...solutions.net>
> Cc: Richard Weinberger <richard@....at>
> Cc: linux-um@...ts.infradead.org
> Cc: Daniel Vetter <daniel@...ll.ch>
> Cc: Helge Deller <deller@....de>
> Cc: linux-fbdev@...r.kernel.org
> Cc: dri-devel@...ts.freedesktop.org
> Cc: Andres Salomon <dilinger@...ued.net>
> Cc: linux-geode@...ts.infradead.org

applied.
Thanks!

Helge


> ---
>   drivers/video/fbdev/geode/Kconfig |    1 +
>   1 file changed, 1 insertion(+)
>
> diff -- a/drivers/video/fbdev/geode/Kconfig b/drivers/video/fbdev/geode/Kconfig
> --- a/drivers/video/fbdev/geode/Kconfig
> +++ b/drivers/video/fbdev/geode/Kconfig
> @@ -5,6 +5,7 @@
>   config FB_GEODE
>   	bool "AMD Geode family framebuffer support"
>   	depends on FB && PCI && (X86_32 || (X86 && COMPILE_TEST))
> +	depends on !UML
>   	help
>   	  Say 'Y' here to allow you to select framebuffer drivers for
>   	  the AMD Geode family of processors.