Re: [PATCH v6 0/4] soc: qcom: ubwc: Fix link error when QCOM_SMEM=n

[Arnd Bergmann]

On Mon, Aug 17, 2026, at 14:35, Daniel Baluta wrote:
> DRM_MSM and VIDEO_QCOM_IRIS select QCOM_UBWC_CONFIG, whose
> ubwc_config.c calls QCOM_SMEM APIs unconditionally. On configs without
> QCOM_SMEM this fails to link, e.g. on SOC_IMX5:
>
>   arm-linux-gnueabihf-ld: ubwc_config.c:(.text+0x2c): undefined
>       reference to 'qcom_smem_is_available'
>
> Fix it by making the QCOM_SMEM requirement explicit in Kconfig.
>
> Changes since v5:
>  * added patch 4/4 to this series, which was initially sent as a
>  standalone patch (addresses review from Nathan)
>  * no other change to the series.
>  * picked up all R-b and Acked-by tags.
>
> Link to v5: 
> https://lore.kernel.org/imx/20260814141724.1006382-1-daniel.baluta@xxxxxxx/T/#t

Krzysztof pointed me to this series when I ran into the same problem
during my last minute regression test for the coming merge window.

I've included the four patches as fixups in the soc/drivers branch
now and plan to send this to Linus later today when the regression tests
finish.

Let me know if anyone feels that the patches should go a different way.

    Arnd