linux-kernel - Re: [PATCH] counter: stm32-lptimer-cnt: fix error handling when enabling

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Message-ID: <174108402893.227977.9200776572329997415.b4-ty@kernel.org>
Date: Tue,  4 Mar 2025 19:28:42 +0900
From: William Breathitt Gray <wbg@...nel.org>
To: Fabrice Gasnier <fabrice.gasnier@...s.st.com>
Cc: William Breathitt Gray <wbg@...nel.org>,
	alexandre.torgue@...s.st.com,
	olivier.moysan@...s.st.com,
	linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-stm32@...md-mailman.stormreply.com
Subject: Re: [PATCH] counter: stm32-lptimer-cnt: fix error handling when enabling


On Mon, 24 Feb 2025 18:06:57 +0100, Fabrice Gasnier wrote:
> In case the stm32_lptim_set_enable_state() fails to update CMP and ARR,
> a timeout error is raised, by regmap_read_poll_timeout. It may happen,
> when the lptimer runs on a slow clock, and the clock is gated only
> few times during the polling.
> 
> Badly, when this happen, STM32_LPTIM_ENABLE in CR register has been set.
> So the 'enable' state in sysfs wrongly lies on the counter being
> correctly enabled, due to CR is read as one in stm32_lptim_is_enabled().
> 
> [...]

Applied, thanks!

[1/1] counter: stm32-lptimer-cnt: fix error handling when enabling
      commit: 8744dcd4fc7800de2eb9369410470bb2930d4c14

Best regards,
-- 
William Breathitt Gray <wbg@...nel.org>