Re: [LKP] [lkp] [ALSA] ca53fbf3a6: WARNING: CPU: 0 PID: 151 at sound/hda/hdac_i915.c:129 pin2port+0x2a/0x40 [snd_hda_core]()

Hi Takashi, > -----Original Message----- > From: Takashi Iwai [mailto:tiwai@suse.de] > Sent: Monday, March 14, 2016 3:23 PM > To: kernel test robot > Cc: lkp(a)01.org; LKML; Wu, Fengguang; Yang, Libin; Lin, Mengdong > Subject: Re: [lkp] [ALSA] ca53fbf3a6: WARNING: CPU: 0 PID: 151 at > sound/hda/hdac_i915.c:129 pin2port+0x2a/0x40 [snd_hda_core]() > > On Mon, 14 Mar 2016 01:50:45 +0100, > kernel test robot wrote: > > > > FYI, we noticed the below changes on > > > > https://github.com/0day-ci/linux Takashi-Iwai/ALSA-hda-Add-a-sanity- > check-of-pin-port-mapping-on-i915-HDMI-DP/20160310-225740 > > commit ca53fbf3a609b6831222078af9ddbecbf76fddce ("ALSA: hda - > Add a sanity check of pin / port mapping on i915 HDMI/DP") > > > > > > [ 14.546058] snd_hda_intel 0000:00:1b.0: bound 0000:00:02.0 (ops > i915_audio_component_bind_ops [i915]) > > [ 14.549740] fbcon: inteldrmfb (fb0) is primary device > > [ 14.553691] ------------[ cut here ]------------ > > [ 14.553707] WARNING: CPU: 0 PID: 151 at > sound/hda/hdac_i915.c:129 pin2port+0x2a/0x40 [snd_hda_core]() > > Does your tree contain the commit > 2f791908a70e95768596f5bb9e6de4f441d7bf13 > drm/i915: Fix bogus dig_port_map[] assignment for pre-HSW > ? > > The commit above should cover it even for HSW. > > If it's already included, then it's really a bug, and the warning is > exactly for catching such a bug. The HD-audio driver expects that the > valid audio ports are only from port B to port D while i915 driver > assigns a different one. I suspect that the current assumption is too > naive and broken for SKL and later in this regard. > > Libin, Mengdong, could you check whether the audio port mapping rule > is still valid? At least, a wrong port-A mapping could be reproduced > even on a HSW laptop with DP-MST dock when I boot without eDP > (e.g. video=eDP-1:d option). We checked with HW before, and the mapping should be right. What's the problem now? I will check with our HW and gfx team.