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Date:   Sun, 05 Jul 2020 11:28:56 +0100
From:   Marc Zyngier <>
To:     Andy Shevchenko <>
Cc:     Greg Kroah-Hartman <>,
        Kevin Hilman <>,
        "open list:SERIAL DRIVERS" <>,,
        Linux Kernel Mailing List <>,,
        Andy Shevchenko <>
Subject: Re: [PATCH] tty: serial: meson_uart: Init port lock early

On 2020-07-05 11:07, Andy Shevchenko wrote:
> On Sun, Jul 5, 2020 at 12:32 PM Marc Zyngier <> wrote:
>> The meson UART driver triggers a lockdep splat at boot time, due
>> to the new expectation that the driver has to initialize the
>> per-port spinlock itself.
>> It remains unclear why a double initialization of the port
>> spinlock is a desirable outcome, but in the meantime let's
>> fix the splat.
> Thanks!
> Can you test patch from [1] if it helps and doesn't break anything in 
> your case?
> [1]:

On its own, this patch doesn't seem to cure the issue (and it
adds a compile-time warning due to unused flags).

Or did you mean to test it in complement of my patch?

Jazz is not dead. It just smells funny...

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