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[00/21] treewide: remove unneeded 'fast_io' parameter in regmap_config

Message ID 20250813161517.4746-1-wsa+renesas@sang-engineering.com (mailing list archive)
Headers
Series treewide: remove unneeded 'fast_io' parameter in regmap_config |

Message

Wolfram Sang Aug. 13, 2025, 4:14 p.m. UTC 
While working on a driver using regmap with MMIO, I wondered if I need
to set 'fast_io' in the config. Turned out I don't need to, so I added
documentation for it with commit ffc72771ff6e ("regmap: Annotate that
MMIO implies fast IO").

This series fixes the existing users in the tree which needlessly set
the flag. They have been found using this coccinelle script:

===

@ match @
expression dev, clk, regs;
identifier config;
@@

(
	regmap_init_mmio(dev, regs, &config)
|
	devm_regmap_init_mmio(dev, regs, &config)
|
	regmap_init_mmio_clk(dev, clk, regs, &config)
|
	devm_regmap_init_mmio_clk(dev, clk, regs, &config)
)

@ fix depends on match @
identifier match.config;
@@

	struct regmap_config config = {
-	.fast_io = true,
	};

===

It misses occasions where 'config' is an expression and not an
identifier. These are rare, though, I can fix them manually later. The
advantage of this approach is that it produces no false positives to the
best of my knowledge.

Please apply individually per subsystem. There are no dependencies and
buildbot is happy. Patches are based on 6.17-rc1

Happy hacking,

   Wolfram


Wolfram Sang (21):
  bus: remove unneeded 'fast_io' parameter in regmap_config
  clk: remove unneeded 'fast_io' parameter in regmap_config
  gpio: remove unneeded 'fast_io' parameter in regmap_config
  drm: remove unneeded 'fast_io' parameter in regmap_config
  iio: remove unneeded 'fast_io' parameter in regmap_config
  Input: remove unneeded 'fast_io' parameter in regmap_config
  mailbox: remove unneeded 'fast_io' parameter in regmap_config
  media: remove unneeded 'fast_io' parameter in regmap_config
  mfd: remove unneeded 'fast_io' parameter in regmap_config
  mmc: remove unneeded 'fast_io' parameter in regmap_config
  peci: remove unneeded 'fast_io' parameter in regmap_config
  phy: remove unneeded 'fast_io' parameter in regmap_config
  pinctrl: remove unneeded 'fast_io' parameter in regmap_config
  pmdomain: remove unneeded 'fast_io' parameter in regmap_config
  regulator: remove unneeded 'fast_io' parameter in regmap_config
  reset: remove unneeded 'fast_io' parameter in regmap_config
  rtc: remove unneeded 'fast_io' parameter in regmap_config
  soc: remove unneeded 'fast_io' parameter in regmap_config
  spi: remove unneeded 'fast_io' parameter in regmap_config
  thermal: remove unneeded 'fast_io' parameter in regmap_config
  ASoC: remove unneeded 'fast_io' parameter in regmap_config

 drivers/bus/bt1-apb.c                             | 1 -
 drivers/clk/actions/owl-common.c                  | 1 -
 drivers/clk/clk-axm5516.c                         | 1 -
 drivers/clk/nxp/clk-lpc32xx.c                     | 1 -
 drivers/clk/qcom/a53-pll.c                        | 1 -
 drivers/clk/qcom/a7-pll.c                         | 1 -
 drivers/clk/qcom/apss-ipq-pll.c                   | 1 -
 drivers/clk/qcom/clk-cbf-8996.c                   | 1 -
 drivers/clk/qcom/clk-cpu-8996.c                   | 1 -
 drivers/clk/qcom/hfpll.c                          | 1 -
 drivers/clk/qcom/ipq-cmn-pll.c                    | 1 -
 drivers/clk/thead/clk-th1520-ap.c                 | 1 -
 drivers/gpio/gpio-mvebu.c                         | 1 -
 drivers/gpio/gpio-sifive.c                        | 1 -
 drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi2.c    | 1 -
 drivers/gpu/drm/imx/dc/dc-cf.c                    | 1 -
 drivers/gpu/drm/imx/dc/dc-de.c                    | 1 -
 drivers/gpu/drm/imx/dc/dc-ed.c                    | 2 --
 drivers/gpu/drm/imx/dc/dc-fg.c                    | 1 -
 drivers/gpu/drm/imx/dc/dc-fl.c                    | 1 -
 drivers/gpu/drm/imx/dc/dc-fw.c                    | 2 --
 drivers/gpu/drm/imx/dc/dc-ic.c                    | 1 -
 drivers/gpu/drm/imx/dc/dc-lb.c                    | 2 --
 drivers/gpu/drm/imx/dc/dc-tc.c                    | 1 -
 drivers/gpu/drm/imx/ipuv3/imx-tve.c               | 2 --
 drivers/gpu/drm/rockchip/dw-mipi-dsi2-rockchip.c  | 1 -
 drivers/iio/adc/sun4i-gpadc-iio.c                 | 1 -
 drivers/input/touchscreen/fsl-imx25-tcq.c         | 1 -
 drivers/mailbox/qcom-apcs-ipc-mailbox.c           | 1 -
 drivers/media/cec/platform/stm32/stm32-cec.c      | 1 -
 drivers/mfd/exynos-lpass.c                        | 1 -
 drivers/mfd/fsl-imx25-tsadc.c                     | 1 -
 drivers/mfd/stm32-lptimer.c                       | 1 -
 drivers/mfd/sun4i-gpadc.c                         | 1 -
 drivers/mmc/host/sdhci_am654.c                    | 1 -
 drivers/peci/controller/peci-npcm.c               | 1 -
 drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c | 1 -
 drivers/phy/rockchip/phy-rockchip-usbdp.c         | 1 -
 drivers/phy/ti/phy-am654-serdes.c                 | 1 -
 drivers/phy/ti/phy-j721e-wiz.c                    | 1 -
 drivers/pinctrl/pinctrl-rp1.c                     | 1 -
 drivers/pmdomain/imx/gpc.c                        | 1 -
 drivers/regulator/qcom-refgen-regulator.c         | 1 -
 drivers/reset/reset-intel-gw.c                    | 1 -
 drivers/reset/reset-qcom-pdc.c                    | 1 -
 drivers/reset/reset-th1520.c                      | 1 -
 drivers/rtc/rtc-meson.c                           | 1 -
 drivers/soc/qcom/llcc-qcom.c                      | 1 -
 drivers/soc/qcom/ramp_controller.c                | 1 -
 drivers/spi/spi-altera-platform.c                 | 1 -
 drivers/thermal/armada_thermal.c                  | 1 -
 drivers/thermal/sun8i_thermal.c                   | 1 -
 sound/soc/fsl/fsl_sai.c                           | 1 -
 53 files changed, 57 deletions(-)