From: Sasha Levin <sashal@kernel.org>
To: Vincent Whitchurch <vincent.whitchurch@axis.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"stable@vger.kernel.org" <stable@vger.kernel.org>,
Mark Brown <broonie@kernel.org>
Subject: Re: [PATCH AUTOSEL 4.14 05/15] regulator: pwm: Fix machine constraints application
Date: Sun, 20 Sep 2020 10:05:34 -0400 [thread overview]
Message-ID: <20200920140534.GK2431@sasha-vm> (raw)
In-Reply-To: <20200915075508.jddoubwnptjcqtru@axis.com>
On Tue, Sep 15, 2020 at 09:55:08AM +0200, Vincent Whitchurch wrote:
>On Mon, Sep 14, 2020 at 03:05:16PM +0200, Sasha Levin wrote:
>> From: Vincent Whitchurch <vincent.whitchurch@axis.com>
>>
>> [ Upstream commit 59ae97a7a9e1499c2070e29841d1c4be4ae2994a ]
>>
>> If the zero duty cycle doesn't correspond to any voltage in the voltage
>> table, the PWM regulator returns an -EINVAL from get_voltage_sel() which
>> results in the core erroring out with a "failed to get the current
>> voltage" and ending up not applying the machine constraints.
>>
>> Instead, return -ENOTRECOVERABLE which makes the core set the voltage
>> since it's at an unknown value.
>
>For this patch to work it needs 84b3a7c9c6befe5ab4d49070fe7 ("regulator:
>core: Allow for regulators that can't be read at bootup") which was
>merged in v4.18. Without that this patch is not going to have any
>effect so it probably shouldn't be backported to older kernels.
Dropped for those older kernels, thanks!
--
Thanks,
Sasha
next prev parent reply other threads:[~2020-09-20 14:05 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-14 13:05 [PATCH AUTOSEL 4.14 01/15] NFSv4.1 handle ERR_DELAY error reclaiming locking state on delegation recall Sasha Levin
2020-09-14 13:05 ` [PATCH AUTOSEL 4.14 02/15] scsi: pm8001: Fix memleak in pm8001_exec_internal_task_abort Sasha Levin
2020-09-14 13:05 ` [PATCH AUTOSEL 4.14 03/15] scsi: libfc: Fix for double free() Sasha Levin
2020-09-14 13:05 ` [PATCH AUTOSEL 4.14 04/15] scsi: lpfc: Fix FLOGI/PLOGI receive race condition in pt2pt discovery Sasha Levin
2020-09-14 13:05 ` [PATCH AUTOSEL 4.14 05/15] regulator: pwm: Fix machine constraints application Sasha Levin
2020-09-15 7:55 ` Vincent Whitchurch
2020-09-20 14:05 ` Sasha Levin [this message]
2020-09-14 13:05 ` [PATCH AUTOSEL 4.14 06/15] spi: spi-loopback-test: Fix out-of-bounds read Sasha Levin
2020-09-14 13:05 ` [PATCH AUTOSEL 4.14 07/15] SUNRPC: stop printk reading past end of string Sasha Levin
2020-09-14 13:05 ` [PATCH AUTOSEL 4.14 08/15] rapidio: Replace 'select' DMAENGINES 'with depends on' Sasha Levin
2020-09-14 13:05 ` [PATCH AUTOSEL 4.14 09/15] kobject: Drop unneeded conditional in __kobject_del() Sasha Levin
2020-09-14 14:13 ` Greg Kroah-Hartman
2020-09-20 14:05 ` Sasha Levin
2020-09-14 13:05 ` [PATCH AUTOSEL 4.14 10/15] nvme-fc: cancel async events before freeing event struct Sasha Levin
2020-09-14 13:05 ` Sasha Levin
2020-09-14 13:05 ` [f2fs-dev] [PATCH AUTOSEL 4.14 11/15] f2fs: fix indefinite loop scanning for free nid Sasha Levin
2020-09-14 13:05 ` Sasha Levin
2020-09-14 13:05 ` [PATCH AUTOSEL 4.14 12/15] i2c: algo: pca: Reapply i2c bus settings after reset Sasha Levin
2020-09-14 13:05 ` [PATCH AUTOSEL 4.14 13/15] spi: Fix memory leak on splited transfers Sasha Levin
2020-09-14 13:05 ` [PATCH AUTOSEL 4.14 14/15] gcov: add support for GCC 10.1 Sasha Levin
2020-09-14 13:05 ` [PATCH AUTOSEL 4.14 15/15] KVM: MIPS: Change the definition of kvm type Sasha Levin
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