On Tue, 30 Oct 2012, Felipe Balbi wrote: > On Tue, Oct 30, 2012 at 12:50:52PM +0000, Paul Walmsley wrote: > > certainly PM-idle related, given that the problem goes away by reverting > > Jean's commit 3db11feffc1ad2ab9dea27789e6b5b3032827adc "ARM: OMAP: convert > > I2C driver to PM QoS for MPU latency constraints". > > > > The problem is consistent and easy to reproduce here. > > I don't doubt that :-) What I think, however, is that PM QoS just made > the problem a bit easier to trigger for whatever reason. Maybe because > pm qos defers constraint updates, or something similar ? Based on a very quick look, I'd say the original patch 3db11fe is broken. I don't see how it can ensure that its PM_QOS_CPU_DMA_LATENCY request is honored when CONFIG_CPU_IDLE=n. CONFIG_CPU_IDLE=n is the default for omap2plus_defconfig. - Paul -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
