diff options
| author | Uma Shankar <uma.shankar@intel.com> | 2020-09-14 19:06:52 +0530 |
|---|---|---|
| committer | Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com> | 2020-09-14 21:12:48 +0200 |
| commit | 265f1d4a5a14998b98f963ee04d695cf3f3c2d3a (patch) | |
| tree | bc817a10034715d94fea64f0c7eeb9108b0e7c9e /tests | |
| parent | e271e0778be8204bba5e87b5be425be8454e3445 (diff) | |
tests/device_reset: Work around for driver unbind issue with audio
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 <janusz.krzysztofik@linux.intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/device_reset.c | 11 |
1 files changed, 11 insertions, 0 deletions
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); |