drm/mediatek: Fix probe resource leaks

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commit 07c7c640a8 upstream.

Make sure to unmap and release the component iomap and clock on probe
failure (e.g. probe deferral) and on driver unbind.

Note that unlike of_iomap(), devm_of_iomap() also checks whether the
region is already mapped.

Fixes: 119f517362 ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.")
Cc: stable@vger.kernel.org	# 4.7
Cc: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20250923152340.18234-2-johan@kernel.org/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Johan Hovold 2025-09-23 17:23:36 +02:00 • committed by Greg Kroah-Hartman

parent 27e44ca646

commit bd5ce36c41

3 changed files with 19 additions and 7 deletions

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20

drivers/gpu/drm/mediatek/mtk_ddp_comp.c

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2

drivers/gpu/drm/mediatek/mtk_ddp_comp.h

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4

drivers/gpu/drm/mediatek/mtk_drm_drv.c

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