From: Stephen Boyd <sboyd@kernel.org>
To: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>,
Michael Turquette <mturquette@baylibre.com>,
linux-kernel@vger.kernel.org,
Uwe Kleine-König <u.kleine-koenig@pengutronix.de>,
Claudiu Beznea <claudiu.beznea@microchip.com>,
linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] clk: at91: avoid sleeping early
Date: Mon, 23 Sep 2019 09:58:47 -0700 [thread overview]
Message-ID: <20190923165848.3108A20882@mail.kernel.org> (raw)
In-Reply-To: <20190920153906.20887-1-alexandre.belloni@bootlin.com>
Quoting Alexandre Belloni (2019-09-20 08:39:06)
> It is not allowed to sleep to early in the boot process and this may lead
> to kernel issues if the bootloader didn't prepare the slow clock and main
> clock.
>
> This results in the following error and dump stack on the AriettaG25:
> bad: scheduling from the idle thread!
>
> Ensure it is possible to sleep, else simply have a delay.
>
> Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
> ---
>
> Note that this was already discussed a while ago and Arnd said this approach was
> reasonable:
> https://lore.kernel.org/lkml/6120818.MyeJZ74hYa@wuerfel/
Does this need a Fixes: tag?
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next prev parent reply other threads:[~2019-09-23 16:58 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-20 15:39 [PATCH] clk: at91: avoid sleeping early Alexandre Belloni
2019-09-20 15:39 ` Alexandre Belloni
2019-09-23 16:58 ` Stephen Boyd [this message]
2019-09-23 21:34 ` Alexandre Belloni
2019-09-23 21:34 ` Alexandre Belloni
2019-09-24 12:21 ` Uwe Kleine-König
2019-09-24 12:21 ` Uwe Kleine-König
2019-09-24 20:20 ` Stephen Boyd
2019-09-24 20:20 ` Stephen Boyd
2019-10-05 20:05 ` Alexandre Belloni
2019-10-05 20:05 ` Alexandre Belloni
2019-10-28 14:54 ` Stephen Boyd
2019-10-28 14:54 ` Stephen Boyd
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