linux-kernel - Re: [PATCH v2] pwm: sifive: Always let the first pwm_apply

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Message-ID: <20221128082441.wsqcpuxqk6cynako@pengutronix.de>
Date:   Mon, 28 Nov 2022 09:24:41 +0100
From:   Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To:     Emil Renner Berthing <emil.renner.berthing@...onical.com>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Atish Patra <atishp@...shpatra.org>,
        "Wesley W. Terpstra" <wesley@...ive.com>,
        linux-pwm@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] pwm: sifive: Always let the first pwm_apply_state
 succeed

Hello,

On Wed, Nov 16, 2022 at 06:41:06PM +0100, Emil Renner Berthing wrote:
> On Wed, 9 Nov 2022 at 16:33, Uwe Kleine-König
> <u.kleine-koenig@...gutronix.de> wrote:
> > On Wed, Nov 09, 2022 at 01:45:43PM +0100, Emil Renner Berthing wrote:
> > > How about we merge this bug fix that can easily be backported first
> > > and then look at how it should be handled properly?
> >
> > I thought it wouldn't be that hard to do it right from the start,
> > but I admit it's harder than I expected to get right. My prototype looks
> > as follows:
> 
> This works for me (modulo the two extra {'s). I'd still prefer merging

Yeah, didn't even try to compile it.

> the simpler version and then this on top for ease of backporting, but
> as long as the race is fixed I'm fine. Will you send a cleaned up
> version of this?

I'd let Thierry decide what he want here. Depending on his choice I can
clean up my suggestion (inclusive compile test) on the then relevant
state of the driver.

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |

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