From: Kevin Hilman <khilman@ti.com>
To: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Joe Woodward <jw@terrafix.co.uk>,
linux-omap@vger.kernel.org, Archit Taneja <archit@ti.com>
Subject: Re: DSS2/PM on 3.2 broken?
Date: Thu, 12 Jan 2012 14:40:40 -0800 [thread overview]
Message-ID: <87obu8sfx3.fsf@ti.com> (raw)
In-Reply-To: <1326386551.1896.41.camel@deskari> (Tomi Valkeinen's message of "Thu, 12 Jan 2012 18:42:31 +0200")
Tomi Valkeinen <tomi.valkeinen@ti.com> writes:
> On Mon, 2012-01-09 at 12:46 +0000, Joe Woodward wrote:
>> I'm running on a Gumstix Overo (OMAP3530) with an 24-bit LCD panel connected via the DPI interface (using the generic panel driver).
>>
>> Entering standby used to work just fine on 3.0, but on 3.2 I get the following:
>
> I've been debugging this, but I'm at loss. I added some debug prints,
> which I show below, and I also pushed them to
> "git://gitorious.org/linux-omap-dss2/linux.git pm-test-prints" if
> somebody wants to see exactly what they print.
>
> Kevin, perhaps you have an idea what could be wrong here. Long version
> below, short version: doing system suspend breaks omapdss, if omapdss
> uses pm_runtime_put, but works with pm_runtime_put_sync.
Is the pm_runtime_put() done after system suspend has started?
After system suspend has begun, the workqueue used for async callbacks
is frozen, so any runtime PM calls that you want to work during
suspend/resume must use the _sync versions.
Kevin
next prev parent reply other threads:[~2012-01-12 22:40 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-09 12:46 DSS2/PM on 3.2 broken? Joe Woodward
2012-01-09 21:08 ` NeilBrown
2012-01-10 9:58 ` Joe Woodward
2012-01-11 13:43 ` Paul Walmsley
2012-01-11 14:22 ` Archit
2012-01-11 15:15 ` Joe Woodward
2012-01-11 15:52 ` Archit
2012-01-11 16:13 ` Joe Woodward
2012-01-11 16:54 ` Archit
2012-01-12 9:28 ` Tomi Valkeinen
2012-01-12 9:30 ` Tomi Valkeinen
2012-01-12 9:51 ` Tomi Valkeinen
2012-01-11 22:59 ` NeilBrown
2012-01-13 10:05 ` Paul Walmsley
2012-01-13 11:20 ` NeilBrown
2012-01-13 11:31 ` Paul Walmsley
2012-01-13 23:09 ` NeilBrown
2012-01-13 23:35 ` Paul Walmsley
2012-01-17 21:24 ` NeilBrown
2012-01-22 0:07 ` Paul Walmsley
2012-01-22 11:30 ` NeilBrown
2012-01-24 10:37 ` OMAP HDQ: was " NeilBrown
2012-01-26 14:19 ` Paul Walmsley
2012-01-27 22:35 ` NeilBrown
2012-01-27 22:58 ` Paul Walmsley
2012-01-28 0:40 ` NeilBrown
2012-01-28 6:02 ` Paul Walmsley
2012-02-01 7:51 ` NeilBrown
2012-02-01 18:36 ` Paul Walmsley
2012-01-18 7:13 ` Tomi Valkeinen
2012-01-18 11:15 ` NeilBrown
2012-01-18 11:42 ` Tomi Valkeinen
2012-01-18 20:30 ` NeilBrown
2012-01-19 10:17 ` Joe Woodward
2012-01-19 10:40 ` Tomi Valkeinen
2012-01-19 11:29 ` Joe Woodward
2012-01-19 11:36 ` Tomi Valkeinen
2012-01-19 12:21 ` Joe Woodward
2012-01-19 14:52 ` Tomi Valkeinen
2012-01-19 19:37 ` Kevin Hilman
2012-01-19 21:05 ` NeilBrown
2012-01-20 0:22 ` Kevin Hilman
2012-01-21 12:12 ` NeilBrown
2012-01-23 22:11 ` Kevin Hilman
2012-01-25 0:32 ` NeilBrown
2012-01-13 11:34 ` Govindraj
2012-01-13 13:23 ` Paul Walmsley
2012-01-13 19:21 ` Kevin Hilman
2012-01-13 22:37 ` Kevin Hilman
2012-01-13 23:06 ` Paul Walmsley
2012-01-13 23:34 ` Paul Walmsley
2012-01-14 1:17 ` NeilBrown
2012-01-14 1:28 ` Paul Walmsley
2012-01-13 23:39 ` Paul Walmsley
2012-01-13 11:19 ` Paul Walmsley
2012-01-11 13:32 ` Paul Walmsley
2012-01-12 16:42 ` Tomi Valkeinen
2012-01-12 22:40 ` Kevin Hilman [this message]
2012-01-13 5:29 ` Tomi Valkeinen
2012-01-13 19:30 ` Kevin Hilman
2012-01-16 11:11 ` Tomi Valkeinen
2012-01-19 19:24 ` Kevin Hilman
2012-01-20 7:16 ` Tomi Valkeinen
2012-01-20 18:06 ` Kevin Hilman
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