Fabrice GasnierandGreg Kroah-Hartman 9d4a4a9ee9 pwm: stm32-lp: fix the check on arr and cmp registers update ...

[ Upstream commit 3066bc2d58 ]

The ARR (auto reload register) and CMP (compare) registers are
successively written. The status bits to check the update of these
registers are polled together with regmap_read_poll_timeout().
The condition to end the loop may become true, even if one of the
register isn't correctly updated.
So ensure both status bits are set before clearing them.

Fixes: e70a540b4e ("pwm: Add STM32 LPTimer PWM driver")
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2023-03-11 16:40:08 +01:00

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core.c

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Kconfig

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Makefile

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pwm-ab8500.c

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pwm-atmel-hlcdc.c

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pwm-atmel-tcb.c

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pwm-atmel.c

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pwm-bcm2835.c

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pwm-bcm-iproc.c

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pwm-bcm-kona.c

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pwm-berlin.c

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pwm-brcmstb.c

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pwm-clps711x.c

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pwm-crc.c

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pwm-cros-ec.c

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pwm-ep93xx.c

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pwm-fsl-ftm.c

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pwm-hibvt.c

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pwm-img.c

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pwm-imx1.c

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pwm-imx27.c

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pwm-imx-tpm.c

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pwm-iqs620a.c

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pwm-jz4740.c

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pwm-lp3943.c

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pwm-lpc18xx-sct.c

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pwm-lpc32xx.c

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pwm-lpss-pci.c

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pwm-lpss-platform.c

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pwm-lpss.c

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pwm-lpss.h

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pwm-mediatek.c

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pwm-meson.c

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pwm-mtk-disp.c

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pwm-mxs.c

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pwm-omap-dmtimer.c

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pwm-pca9685.c

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pwm-pxa.c

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pwm-rcar.c

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pwm-renesas-tpu.c

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pwm-rockchip.c

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pwm-samsung.c

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pwm-sifive.c

pwm: sifive: Always let the first pwm_apply_state succeed

2023-03-11 16:40:08 +01:00

pwm-sl28cpld.c

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pwm-spear.c

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pwm-sprd.c

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pwm-sti.c

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pwm-stm32-lp.c

pwm: stm32-lp: fix the check on arr and cmp registers update

2023-03-11 16:40:08 +01:00

pwm-stm32.c

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pwm-stmpe.c

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pwm-sun4i.c

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pwm-tegra.c

pwm: tegra: Fix 32 bit build

2023-01-14 10:16:24 +01:00

pwm-tiecap.c

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pwm-tiehrpwm.c

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pwm-twl-led.c

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pwm-twl.c

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pwm-vt8500.c

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pwm-zx.c

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sysfs.c

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