On Sat, Jul 04, 2026 at 01:08:13AM +0530, Mukesh Ojha wrote:

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/20260703164457.4040457-1-mukesh.ojha@oss.qualcomm.com/ (local)

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()

For the hdlcd, komeda and malidp drivers:

Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>

Best regards,
Liviu

  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

-- 
====================
| I would like to |
| fix the world,  |
| but they're not |
| giving me the   |
 \ source code!  /
  ---------------
    ¯\_(ツ)_/¯