linux-kernel - Re: [PATCH 1/1] soc: ti: omap-prm: use atomic iopoll instead of sleeping one

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Message-ID: <eff0d78e-7e94-6574-6b17-f3293ef55918@oracle.com>
Date:   Tue, 19 May 2020 11:04:06 -0700
From:   santosh.shilimkar@...cle.com
To:     Tony Lindgren <tony@...mide.com>, Tero Kristo <t-kristo@...com>
Cc:     ssantosh@...nel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org,
        s-anna@...com
Subject: Re: [PATCH 1/1] soc: ti: omap-prm: use atomic iopoll instead of
 sleeping one

On 5/19/20 10:45 AM, Tony Lindgren wrote:
> * Tero Kristo <t-kristo@...com> [200514 00:38]:
>> The reset handling APIs for omap-prm can be invoked PM runtime which
>> runs in atomic context. For this to work properly, switch to atomic
>> iopoll version instead of the current which can sleep. Otherwise,
>> this throws a "BUG: scheduling while atomic" warning. Issue is seen
>> rather easily when CONFIG_PREEMPT is enabled.
>>
>> Signed-off-by: Tero Kristo <t-kristo@...com>
> 
> Santosh do you want me to pick this for fixes?
> 
Sure Tony. Thanks !!

Acked-by: Santosh Shilimkar <ssantosh@...nel.org>