linux-kernel - Re: [PATCH 1/2] bus: ti-sysc: Fix wakeirq sleeping function called from invalid context

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Message-ID: <20200702190249.GO37466@atomide.com>
Date:   Thu, 2 Jul 2020 12:02:49 -0700
From:   Tony Lindgren <tony@...mide.com>
To:     Suman Anna <s-anna@...com>
Cc:     linux-omap@...r.kernel.org, "Andrew F . Davis" <afd@...com>,
        Dave Gerlach <d-gerlach@...com>,
        Faiz Abbas <faiz_abbas@...com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Keerthy <j-keerthy@...com>, Nishanth Menon <nm@...com>,
        Peter Ujfalusi <peter.ujfalusi@...com>,
        Roger Quadros <rogerq@...com>, Tero Kristo <t-kristo@...com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/2] bus: ti-sysc: Fix wakeirq sleeping function called
 from invalid context

* Suman Anna <s-anna@...com> [200702 18:01]:
> Hi Tony,
> 
> On 7/2/20 12:49 PM, Tony Lindgren wrote:
> > With CONFIG_DEBUG_ATOMIC_SLEEP enabled we can see the following with
> > wakeirqs and serial console idled:
> 
> Which devices are these? I have one patch from Tero fixing similar errors in
> OMAP IOMMU driver. Will post that either today or tomorrow.

I noticed this testing Andy Schevchenko's pending generic serial PM
patches. It happens on any omap variant with kernel serial console
detached and uart idled. Then just wait for the autosuspend timeout
to expire and type a character on the serial console :)

Regards,

Tony