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From: tony@atomide.com (Tony Lindgren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: OMAP4: Fix the boot regression with CPU_IDLE enabled
Date: Thu, 15 May 2014 17:13:06 -0700	[thread overview]
Message-ID: <20140516001306.GA6580@atomide.com> (raw)
In-Reply-To: <20140514233119.GA31594@atomide.com>

* Tony Lindgren <tony@atomide.com> [140514 16:32]:
> * Tony Lindgren <tony@atomide.com> [140514 13:57]:
> > * Daniel Lezcano <daniel.lezcano@linaro.org> [140514 13:02]:
> > > 
> > > So the broadcast timer does not operate with this revert. Moreover, I am not
> > > sure reverting this patch is the right solution.
> > 
> > OK I'll hold on sending anything until there's some conclusion.
> > 
> > Are you able to reproduce the problem with current Linux next?
> 
> BTW, I'm also noticing now hangs on omap3 with my PM patches
> on v3.15-rc4 that seem similar to the panda cpuidle hang.
> 
> The hangs on omap3 do not happen on my v3.14 based branch, so
> I'm wondering if there are some recent cpuidle regressions too
> in play?

Looks like the omap3 idle hang is caused by commit 6ddeb6d84459
(dmaengine: omap-dma: move IRQ handling to omap-dma). This may
not be related to omap4 cpu_idle hang, but it might.

I'm trying to figure out if it's related to something like
omap_dma_global_context_save and omap_dma_global_context_restore.

Meanwhile, to test the DMA changes have an effect on the omap4
cpu_idle issue, you can try reverting the following two patches:

aa4c5b962a7a dmaengine: omap-dma: more consolidation of CCR register setup
6ddeb6d84459 dmaengine: omap-dma: move IRQ handling to omap-dma

Regards,

Tony

  reply	other threads:[~2014-05-16  0:13 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-13 14:39 [PATCH] ARM: OMAP4: Fix the boot regression with CPU_IDLE enabled Santosh Shilimkar
2014-05-14 15:22 ` Tony Lindgren
2014-05-14 19:44 ` Daniel Lezcano
2014-05-14 19:50   ` Santosh Shilimkar
2014-05-14 20:02     ` Daniel Lezcano
2014-05-14 20:56       ` Tony Lindgren
2014-05-14 23:31         ` Tony Lindgren
2014-05-16  0:13           ` Tony Lindgren [this message]
2014-05-16  0:40             ` Tony Lindgren
2014-05-14 21:18       ` Santosh Shilimkar
2014-05-15 17:03         ` Santosh Shilimkar
2014-05-15 17:50           ` Daniel Lezcano
2014-05-15 17:54             ` Santosh Shilimkar
2014-05-15 18:29               ` Santosh Shilimkar
2014-05-16  0:33                 ` Alex Shi
2014-05-16 13:43                 ` Santosh Shilimkar
2014-05-16 21:29                   ` Tony Lindgren
2014-05-19 16:45                     ` Daniel Lezcano
2014-05-19 17:23                       ` Tony Lindgren
2014-05-19 17:34                         ` Santosh Shilimkar
2014-05-19 17:51                           ` Tony Lindgren
2014-05-19 18:06                             ` Daniel Lezcano
2014-05-19 19:36                               ` Tony Lindgren
2014-05-19 19:45                                 ` Daniel Lezcano
2014-05-19 21:18                                   ` Tobias Jakobi
2014-05-19 22:42                                     ` Tony Lindgren
2014-05-23 14:44                                     ` Tony Lindgren
2014-05-23 18:32                                       ` Tony Lindgren
     [not found]                                         ` <CAKnoXLxj42veWCbRjX98iT3FNAb92J4yR+UAL716JFSOb=pcrQ@mail.gmail.com>
2014-05-27 20:34                                           ` Tony Lindgren
2014-05-27 21:03                                             ` Santosh Shilimkar
2014-05-27 21:06                                               ` Daniel Lezcano
2014-05-19 20:00                                 ` Santosh Shilimkar

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