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

From: Daniel Baluta

Date: Mon Aug 17 2026 - 08:32:33 EST


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(-)

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2.45.2