From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Luis Claudio R. Goncalves" Subject: Re: [4.0.5-rt4] i915: sleeping function called from invalid context at intel_pipe_update_start/end Date: Fri, 10 Jul 2015 11:14:49 -0300 Message-ID: <20150710141449.GI5216@uudg.org> References: <20150625150947.GA10320@uudg.org> <20150710140826.GB27402@linutronix.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-rt-users To: Sebastian Andrzej Siewior Return-path: Received: from mail-qk0-f174.google.com ([209.85.220.174]:34797 "EHLO mail-qk0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932559AbbGJOOy (ORCPT ); Fri, 10 Jul 2015 10:14:54 -0400 Received: by qkcl188 with SMTP id l188so24211965qkc.1 for ; Fri, 10 Jul 2015 07:14:53 -0700 (PDT) Content-Disposition: inline In-Reply-To: <20150710140826.GB27402@linutronix.de> Sender: linux-rt-users-owner@vger.kernel.org List-ID: On Fri, Jul 10, 2015 at 04:08:26PM +0200, Sebastian Andrzej Siewior wrote: | * Luis Claudio R. Goncalves | 2015-06-25 12:09:47 [-0300]: | | >Hi! | Hi, | | >I have been seeing the annoying message below non-stop: | > | >i915: sleeping function called from invalid context at intel_pipe_update_start/end | | I am not sure what we break here if we drop the irq-off. It waits to sync | with the interrupt and expects no interruption after that. What about if | we skip this mmio_flip thing entirely? Either via modprobe or kernel | commandline | | i915.use_mmio_flip=-1 | | should do the trick. Either way | /sys/module/i915/parameters/use_mmio_flip | should be -1. Could you please try and test? I will need to test that during the weekend, but I can surely test. Luis