From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id 31E066E550 for ; Mon, 14 Sep 2020 19:19:38 +0000 (UTC) Message-ID: From: Janusz Krzysztofik Date: Mon, 14 Sep 2020 21:19:29 +0200 In-Reply-To: <20200914133652.13021-1-uma.shankar@intel.com> References: <20200914133652.13021-1-uma.shankar@intel.com> MIME-Version: 1.0 Subject: Re: [igt-dev] [PATCH i-g-t] tests/device_reset: Work around for driver unbind issue with audio List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" To: Uma Shankar , igt-dev@lists.freedesktop.org Cc: marcin.bernatowicz@intel.com, Lakshminarayana Vudum List-ID: On Mon, 2020-09-14 at 19:06 +0530, Uma Shankar wrote: > Unbinding the i915 driver on some Haswell and Broadwell platforms with > Azalia audio results in a kernel WARNING on "i915 raw-wakerefs=1 > wakelocks=1 on cleanup". The issue can be worked around by manually > enabling runtime power management for the conflicting audio adapter. > Use that method but also display a warning to preserve visibility of > the issue. Also tag the workaround with a FIXME comment. > > Suggested-by: Janusz Krzysztofik > Signed-off-by: Uma Shankar > Reviewed-by: Janusz Krzysztofik Pushed. @Lakshmi, since kernel WARN has been replaced with an IGT warning but the issue remains the same, please update the filter of the bug. Thanks, Janusz > --- > tests/device_reset.c | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/tests/device_reset.c b/tests/device_reset.c > index b1181b3b..9cb59ee4 100644 > --- a/tests/device_reset.c > +++ b/tests/device_reset.c > @@ -232,9 +232,20 @@ static void set_device_filter(const char* dev_path) > > static void unbind_reset_rebind(struct device_fds *dev) > { > + uint32_t devid = intel_get_drm_devid(dev->fds.dev); > igt_debug("close the device\n"); > close_if_opened(&dev->fds.dev); > > + /** > + * FIXME: Unbinding the i915 driver on some platforms with Azalia audio > + * results in a kernel WARN on "i915 raw-wakerefs=1 wakelocks=1 on cleanup". > + * The below CI friendly user level workaround prevents the warning from > + * appearing. Drop this hack as soon as this is fixed in the kernel. > + */ > + if (igt_warn_on_f((bool) IS_HASWELL(devid) || IS_BROADWELL(devid), > + "Manually enabling audio PM to work around a kernel WARN\n")) > + igt_pm_enable_audio_runtime_pm(); > + > driver_unbind(dev); > > initiate_device_reset(dev); _______________________________________________ igt-dev mailing list igt-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/igt-dev