linux-kernel - Re: [PATCH] clk: bcm2835: fix bcm2835_clock_choose

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Message-ID: <d130ce59-1a4b-901c-d038-07515db746ec@i2se.com>
Date:   Sat, 14 May 2022 10:17:07 +0200
From:   Stefan Wahren <stefan.wahren@...e.com>
To:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com, linux-clk@...r.kernel.org,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Maxime Ripard <maxime@...no.tech>, regressions@...ts.linux.dev
Subject: Re: [PATCH] clk: bcm2835: fix bcm2835_clock_choose_div

Hi,

Am 10.05.22 um 15:27 schrieb Maxime Ripard:
> On Sat, May 07, 2022 at 11:26:28AM +0200, Stefan Wahren wrote:
>> Am 03.05.22 um 16:58 schrieb Maxime Ripard:
>>> Hi,
>>>
>>> On Thu, Apr 28, 2022 at 08:30:10PM +0200, Stefan Wahren wrote:
>>>> The commit 09e3b18ca5de ("clk: bcm2835: Remove unused variable")
>>>> accidentially breaks the behavior of bcm2835_clock_choose_div() and
>>>> booting of Raspberry Pi. The removed do_div macro call had side effects,
>>>> so we need to restore it.
>>>>
>>>> Fixes: 09e3b18ca5de ("clk: bcm2835: Remove unused variable")
>>>> Signed-off-by: Stefan Wahren <stefan.wahren@...e.com>
>>> I only found this patch after debugging why the HDMI driver was
>>> returning -EINVAL at probe on -rc5.
>>>
>>> Acked-by: Maxime Ripard <maxime@...no.tech>
>>> Tested-by: Maxime Ripard <maxime@...no.tech>
>> Thanks,
>>
>> does this go via clk-fixes?
> Yep, it should.
>
> Stephen, could we merge this?
Is there any chance to get this regression fix into mainline before 5.18 
is released?
>
> Maxime