From: Kevin Hilman <khilman@kernel.org>
To: Tony Lindgren <tony@atomide.com>,
Thomas Richard <thomas.richard@bootlin.com>
Cc: gregkh@linuxfoundation.org, jirislaby@kernel.org,
linux-serial@vger.kernel.org, gregory.clement@bootlin.com,
u-kumar1@ti.com, d-gole@ti.com, thomas.petazzoni@bootlin.com
Subject: Re: [PATCH] serial: 8250_omap: Set the console genpd always on if no console suspend
Date: Tue, 31 Oct 2023 10:34:51 -0700 [thread overview]
Message-ID: <7h34xqitl0.fsf@baylibre.com> (raw)
In-Reply-To: <20231031105247.GC57044@atomide.com>
Tony Lindgren <tony@atomide.com> writes:
> * Thomas Richard <thomas.richard@bootlin.com> [231031 10:15]:
>> Please find below the logs of the test you asked me.
>
> OK great thanks!
>
>> I added the call of pm_runtime_get_usage_count at the end of the suspend
>> function.
>> The console is attached on 2800000.serial, it has usage_count=4.
>> Other serial has usage_count=3.
>
> So as suspected, it seems the power domain gets force suspended
> somewhere despite the usage_count.
I think the only way this could happen (excluding any bugs, of course)
would be for pm_runtime_force_suspend() to be getting called somewhere,
but I thought the earlier patch made that call conditional, so maybe
there is another path where that is getting called?
Kevin
next prev parent reply other threads:[~2023-10-31 17:34 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-17 13:05 [PATCH] serial: 8250_omap: Set the console genpd always on if no console suspend Thomas Richard
2023-10-23 7:44 ` Tony Lindgren
2023-10-24 14:53 ` Thomas Richard
2023-10-24 15:24 ` Greg KH
2023-10-23 21:31 ` Kevin Hilman
2023-10-24 4:51 ` Tony Lindgren
2023-10-24 18:36 ` Kevin Hilman
2023-10-25 6:41 ` Tony Lindgren
2023-10-31 10:15 ` Thomas Richard
2023-10-31 10:52 ` Tony Lindgren
2023-10-31 17:34 ` Kevin Hilman [this message]
2023-11-22 14:47 ` Théo Lebrun
2023-11-24 5:37 ` Tony Lindgren
2023-11-24 10:39 ` Théo Lebrun
2023-11-24 10:54 ` Tony Lindgren
2023-11-28 4:05 ` Kevin Hilman
2023-11-28 4:11 ` Tony Lindgren
2023-11-28 4:52 ` Kevin Hilman
2023-11-28 5:05 ` Tony Lindgren
2023-11-27 11:22 ` VAMSHI GAJJELA
2024-08-09 19:04 ` Kevin Hilman
2024-08-13 9:00 ` Greg KH
2024-08-13 17:18 ` Kevin Hilman
2024-08-20 9:15 ` Thomas Richard
2024-09-16 14:03 ` Thomas Richard
2024-10-04 19:23 ` Kevin Hilman
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