At least in Coffee Lake it happens that we start initiliazing audio when no display is connected. This was discovered by CI when running IGT test case
drv_module_reload --r basic-no-display The issue here is that the 'intel_device_info_runtime_init()' sets num_pipes to 0 but before this happens the audio part has already started to initialize itself. Later on the num_pipes is updated to 0 in intel_device_info_runtime_init() and we hit that when audio part is digging out ELD. This causes a warning in dmesg. To fix this issue, let's register the audio driver only in a case when display is enabled. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103206 Signed-off-by: Mika Kahola <mika.kah...@intel.com> --- drivers/gpu/drm/i915/i915_drv.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index e7e9e06..f3cee1b 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -1243,7 +1243,8 @@ static void i915_driver_register(struct drm_i915_private *dev_priv) if (IS_GEN5(dev_priv)) intel_gpu_ips_init(dev_priv); - intel_audio_init(dev_priv); + if (!i915_modparams.disable_display) + intel_audio_init(dev_priv); /* * Some ports require correctly set-up hpd registers for detection to -- 2.7.4 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
