linux-kernel - Re: [PATCH 1/2] arm64: add grace period when rebooting

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Date:   Tue, 12 Jan 2021 13:55:35 +0000
From:   Will Deacon <will@...nel.org>
To:     Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc:     linux-arm-kernel@...ts.infradead.org,
        linux-renesas-soc@...r.kernel.org,
        Catalin Marinas <catalin.marinas@....com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] arm64: add grace period when rebooting

On Sat, Dec 19, 2020 at 03:36:46PM +0100, Wolfram Sang wrote:
> I work on a system where I currently need to reboot via watchdog.
> Because the watchdog needs a bit of time to fire, add a grace period
> like on arm32 to avoid the false positive warning message.

Please can you elaborate a bit on the control flow here, specifically
from the part which arms the watchdog to how we end up in at the mdelay()?

Ideally, the mdelay() would live in some code that knows about the watchdog,
and therefore can choose the appropriate delay.

Thanks,

Will