linux-kernel - Re: [PATCH] m68k: tweak coldfire/device.c for COMPILE

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Message-ID: <CAMuHMdWM_a7gmBw3gQd+BCTuFGpsHN3o9HuU=ivWnZraYXewqQ@mail.gmail.com>
Date:   Fri, 4 Mar 2022 09:55:04 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        patches@...ts.linux.dev, kernel test robot <lkp@...el.com>,
        Angelo Dureghello <angelo@...am.it>,
        Greg Ungerer <gerg@...nel.org>,
        Greg Ungerer <gerg@...ux-m68k.org>,
        linux-m68k <linux-m68k@...ts.linux-m68k.org>,
        uClinux development list <uclinux-dev@...inux.org>
Subject: Re: [PATCH] m68k: tweak coldfire/device.c for COMPILE_TEST

Hi Randy,

On Fri, Mar 4, 2022 at 4:35 AM Randy Dunlap <rdunlap@...radead.org> wrote:
> When CONFIG_MCF_EDMA is set (due to COMPILE_TEST, not due to
> CONFIG_M5441x), coldfire/device.c has compile errors due to
> missing MCFEDMA_* symbols. In the .config file that was provided,
> CONFIG_M5206=y, not CONFIG_M5441x, so <asm/m5441xsim.h> is not
> included in coldfire/device.c.
>
> Only build the MCF_EDMA code in coldfire/device.c if both MCF_EDMA
> and M5441x are enabled.
>
> Fixes these build errors:
>
> ../arch/m68k/coldfire/device.c:512:35: error: 'MCFEDMA_BASE' undeclared here (not in a function); did you mean 'MCFDMA_BASE1'?
>   512 |                 .start          = MCFEDMA_BASE,
> ../arch/m68k/coldfire/device.c:513:50: error: 'MCFEDMA_SIZE' undeclared here (not in a function)
>   513 |                 .end            = MCFEDMA_BASE + MCFEDMA_SIZE - 1,
> ../arch/m68k/coldfire/device.c:517:35: error: 'MCFEDMA_IRQ_INTR0' undeclared here (not in a function)
>   517 |                 .start          = MCFEDMA_IRQ_INTR0,
> ../arch/m68k/coldfire/device.c:523:35: error: 'MCFEDMA_IRQ_INTR16' undeclared here (not in a function)
>   523 |                 .start          = MCFEDMA_IRQ_INTR16,
> ../arch/m68k/coldfire/device.c:529:35: error: 'MCFEDMA_IRQ_INTR56' undeclared here (not in a function)
>   529 |                 .start          = MCFEDMA_IRQ_INTR56,
> ../arch/m68k/coldfire/device.c:535:35: error: 'MCFEDMA_IRQ_ERR' undeclared here (not in a function)
>   535 |                 .start          = MCFEDMA_IRQ_ERR,
>
> Fixes: d7e9d01ac292 ("m68k: add ColdFire mcf5441x eDMA platform support")
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>

Thanks for your patch!

> --- linux-next-20220303.orig/arch/m68k/coldfire/device.c
> +++ linux-next-20220303/arch/m68k/coldfire/device.c
> @@ -480,7 +480,7 @@ static struct platform_device mcf_i2c5 =
>  #endif /* MCFI2C_BASE5 */
>  #endif /* IS_ENABLED(CONFIG_I2C_IMX) */
>
> -#if IS_ENABLED(CONFIG_MCF_EDMA)
> +#if IS_ENABLED(CONFIG_MCF_EDMA) && IS_ENABLED(CONFIG_M5441x)

As this protects hardware description, I'm wondering if this and
below shouldn't just be"#ifdef CONFIG_M5441x"?

See also commit 322c512f476f07e9 ("m68knommu: include SDHC support
only when hardware has it")

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds