Drivers using of_reserved_mem_device_init() and its variants must manually call of_reserved_mem_device_release() in their remove and error-unwind paths. This is repetitive boilerplate that is easy to get wrong, and several drivers have open-coded the teardown inconsistently or skipped it entirely, leading to dangling reserved memory references.
This series introduces devres-managed wrappers — devm_of_reserved_mem_device_init(), devm_of_reserved_mem_device_init_by_idx(), and devm_of_reserved_mem_device_init_by_name() — that tie the reserved memory region lifetime to the device, releasing it automatically on unbind. The remaining 40 patches convert drivers across the drm, media, ASoC, remoteproc, firmware, mmc, memory and misc subsystems to use these helpers, yielding a net reduction of ~90 lines of boilerplate. This series depends on https://lore.kernel.org/lkml/[email protected]/ Konrad Dybcio (1): of: reserved_mem: Introduce devres-managed initialization functions Mukesh Ojha (41): of: reserved_mem: Add devm_of_reserved_mem_device_init_by_name() firmware: qcom: scm: Use devm_of_reserved_mem_device_init() remoteproc: da8xx: Use devm_of_reserved_mem_device_init() remoteproc: keystone: Use devm_of_reserved_mem_device_init() media: synopsys: hdmirx: Use devm_of_reserved_mem_device_init() remoteproc: omap: Use devm_of_reserved_mem_device_init() drm: logicvc: Use devm_of_reserved_mem_device_init() drm: hdlcd: Use devm_of_reserved_mem_device_init() drm: pl111: Use devm_of_reserved_mem_device_init() remoteproc: mtk_scp: Use devm_of_reserved_mem_device_init() media: aspeed: Use devm_of_reserved_mem_device_init() media: nuvoton: npcm-video: Use devm_of_reserved_mem_device_init() memory: tegra210-emc: Use devm_of_reserved_mem_device_init_by_name() drm: komeda: Use devm_of_reserved_mem_device_init() drm: malidp: Use devm_of_reserved_mem_device_init() drm: ingenic: Use devm_of_reserved_mem_device_init() drm: kmb: Use devm_of_reserved_mem_device_init() drm: sun4i: Use devm_of_reserved_mem_device_init() drm: xlnx: zynqmp_dpsub: Use devm_of_reserved_mem_device_init() media: arm: mali-c55: Use devm_of_reserved_mem_device_init() media: mediatek: vpu: Use devm_of_reserved_mem_device_init() mmc: sdhci-of-bst: Use devm_of_reserved_mem_device_init_by_idx() remoteproc: ti_k3: Use devm_of_reserved_mem_device_init() ASoC: mediatek: mt8192: Use devm_of_reserved_mem_device_init() ASoC: mediatek: mt8196: Use devm_of_reserved_mem_device_init() ASoC: mediatek: mt8183: Use devm_of_reserved_mem_device_init() ASoC: mediatek: mt8189: Use devm_of_reserved_mem_device_init() ASoC: SOF: imx: Use devm_of_reserved_mem_device_init_by_name() staging: media: cedrus: Use devm_of_reserved_mem_device_init() ASoC: cix-ipbloq: Use devm_of_reserved_mem_device_init() drm: aspeed: Use devm_of_reserved_mem_device_init() drm: arcpgu: Use devm_of_reserved_mem_device_init() ASoC: mediatek: mt8173: Use devm_of_reserved_mem_device_init() ASoC: mediatek: mt8186: Use devm_of_reserved_mem_device_init() ASoC: mediatek: mt8188: Use devm_of_reserved_mem_device_init() ASoC: mediatek: mt8195: Use devm_of_reserved_mem_device_init() ASoC: SOF: mediatek: mt8186: Use devm_of_reserved_mem_device_init() ASoC: SOF: mediatek: mt8195: Use devm_of_reserved_mem_device_init() misc: fastrpc: Use devm_of_reserved_mem_device_init() ASoC: fsl: imx-rpmsg: Use devm_of_reserved_mem_device_init_by_idx() ASoC: sprd: Use devm_of_reserved_mem_device_init() drivers/firmware/qcom/qcom_scm.c | 22 +++------ .../gpu/drm/arm/display/komeda/komeda_dev.c | 4 +- drivers/gpu/drm/arm/hdlcd_drv.c | 6 +-- drivers/gpu/drm/arm/malidp_drv.c | 4 +- drivers/gpu/drm/aspeed/aspeed_gfx_drv.c | 2 +- drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 13 +----- drivers/gpu/drm/kmb/kmb_drv.c | 12 +---- drivers/gpu/drm/logicvc/logicvc_drm.c | 21 ++++----- drivers/gpu/drm/pl111/pl111_drv.c | 4 +- drivers/gpu/drm/sun4i/sun4i_drv.c | 4 +- drivers/gpu/drm/tiny/arcpgu.c | 2 +- drivers/gpu/drm/xlnx/zynqmp_dpsub.c | 4 +- .../platform/arm/mali-c55/mali-c55-core.c | 12 ++--- drivers/media/platform/aspeed/aspeed-video.c | 12 ++--- drivers/media/platform/mediatek/vpu/mtk_vpu.c | 3 +- drivers/media/platform/nuvoton/npcm-video.c | 9 +--- .../platform/synopsys/hdmirx/snps_hdmirx.c | 16 +------ drivers/memory/tegra/tegra210-emc-core.c | 21 ++++----- drivers/misc/fastrpc.c | 2 +- drivers/mmc/host/sdhci-of-bst.c | 7 +-- drivers/of/of_reserved_mem.c | 41 +++++++++++++++++ drivers/remoteproc/da8xx_remoteproc.c | 10 +--- drivers/remoteproc/keystone_remoteproc.c | 16 +------ drivers/remoteproc/mtk_scp.c | 3 +- drivers/remoteproc/omap_remoteproc.c | 13 +----- drivers/remoteproc/ti_k3_common.c | 13 +----- drivers/remoteproc/ti_k3_common.h | 1 - .../staging/media/sunxi/cedrus/cedrus_hw.c | 6 +-- include/linux/of_reserved_mem.h | 46 +++++++++++++++++++ sound/hda/controllers/cix-ipbloq.c | 2 +- sound/soc/fsl/imx-rpmsg.c | 2 +- sound/soc/mediatek/mt8173/mt8173-afe-pcm.c | 2 +- sound/soc/mediatek/mt8183/mt8183-afe-pcm.c | 13 +----- sound/soc/mediatek/mt8186/mt8186-afe-pcm.c | 2 +- sound/soc/mediatek/mt8188/mt8188-afe-pcm.c | 2 +- sound/soc/mediatek/mt8189/mt8189-afe-pcm.c | 16 +------ sound/soc/mediatek/mt8192/mt8192-afe-pcm.c | 11 +---- sound/soc/mediatek/mt8195/mt8195-afe-pcm.c | 2 +- sound/soc/mediatek/mt8196/mt8196-afe-pcm.c | 14 +----- sound/soc/sof/imx/imx-common.c | 9 ++-- sound/soc/sof/mediatek/mt8186/mt8186.c | 2 +- sound/soc/sof/mediatek/mt8195/mt8195.c | 2 +- sound/soc/sprd/sprd-pcm-dma.c | 3 +- 43 files changed, 162 insertions(+), 249 deletions(-) -- 2.53.0
