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

[Nathan Chancellor]

Hi Daniel,

On Mon, Aug 17, 2026 at 03:35:37PM +0300, 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
> 
> Daniel Baluta (4):
>   drm/msm: Guard the QCOM_UBWC_CONFIG select with QCOM_SMEM
>   media: iris: Guard the QCOM_UBWC_CONFIG select with QCOM_SMEM
>   soc: qcom: ubwc: Fix link error when QCOM_SMEM=n
>   soc: qcom: ubwc: Fix missing include
> 
>  drivers/gpu/drm/msm/Kconfig              | 3 ++-
>  drivers/media/platform/qcom/iris/Kconfig | 3 ++-
>  drivers/soc/qcom/Kconfig                 | 1 +
>  include/linux/soc/qcom/ubwc.h            | 1 +
>  4 files changed, 6 insertions(+), 2 deletions(-)

Thanks, this resolves the build errors that I noticed.

Tested-by: Nathan Chancellor <nathan@xxxxxxxxxx> # build

-- 
Cheers,
Nathan