[PATCH -next] drm/vc4: Fix build error when CONFIG_DRM_VC4=y && CONFIG_RASPBERRYPI_FIRMWARE=m

[Maxime Ripard]

On Thu, Mar 24, 2022 at 03:25:42PM +0800, Zheng Bin wrote:
> If CONFIG_DRM_VC4=y, CONFIG_RASPBERRYPI_FIRMWARE=m, CONFIG_COMPILE_TEST=n,
> bulding fails:
> 
> drivers/gpu/drm/vc4/vc4_drv.o: In function `vc4_drm_bind':
> vc4_drv.c:(.text+0x320): undefined reference to `rpi_firmware_get'
> vc4_drv.c:(.text+0x320): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `rpi_firmware_get'
> vc4_drv.c:(.text+0x34c): undefined reference to `rpi_firmware_property'
> vc4_drv.c:(.text+0x34c): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `rpi_firmware_property'
> vc4_drv.c:(.text+0x354): undefined reference to `rpi_firmware_put'
> vc4_drv.c:(.text+0x354): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `rpi_firmware_put'
> 
> Make DRM_VC4 depends on RASPBERRYPI_FIRMWARE to fix this.
> 
> Fixes: c406ad5e4a85 ("drm/vc4: Notify the firmware when DRM is in charge")
> Reported-by: Hulk Robot <hulkci at huawei.com>
> Signed-off-by: Zheng Bin <zhengbin13 at huawei.com>
> ---
>  drivers/gpu/drm/vc4/Kconfig | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/vc4/Kconfig b/drivers/gpu/drm/vc4/Kconfig
> index de3424fed2fc..640907945b5b 100644
> --- a/drivers/gpu/drm/vc4/Kconfig
> +++ b/drivers/gpu/drm/vc4/Kconfig
> @@ -1,7 +1,8 @@
>  # SPDX-License-Identifier: GPL-2.0-only
>  config DRM_VC4
>  	tristate "Broadcom VC4 Graphics"
> -	depends on ARCH_BCM || ARCH_BCM2835 || COMPILE_TEST
> +	depends on ((ARCH_BCM || ARCH_BCM2835) && \
> +		    RASPBERRYPI_FIRMWARE) || COMPILE_TEST
>  	depends on DRM
>  	depends on SND && SND_SOC
>  	depends on COMMON_CLK

Wouldn't it make more sense to add it as an additional depends on there?
It doesn't look related to the architecture, and we'll still have that
dependency for COMPILE_TEST.

Maxime
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