On Fri, Sep 11, 2015 at 02:39:33PM +0100, Jon Hunter wrote: > > On 11/09/15 14:21, Thierry Reding wrote: > > * PGP Signed by an unknown key > > > > On Fri, Sep 11, 2015 at 02:15:00PM +0100, Jon Hunter wrote: > >> > >> On 11/09/15 13:38, Thierry Reding wrote: > >>>> Old Signed by an unknown key > >>> > >>> On Fri, Sep 11, 2015 at 11:39:01AM +0100, Jon Hunter wrote: > >>>> Hi Kevin, > >>>> > >>>> On 10/09/15 22:29, Kevin Hilman wrote: > >>>> > >>>> [snip] > >>>> > >>>>> Since there is no movement on this, and jetson hasn't been boot for > >>>>> multi_v7_defconfig for a while[1], I think it's time to undo the > >>>>> option causing this problem[2] so that v4.3 will actually boot on the > >>>>> jetson. > >>>>> > >>>>> Unless I hear a good reason otherwise, I'll be posting a patch to > >>>>> disable the HDA related options in multi_v7_defconfig. > >>>> > >>>> So curiosity got the better of this cat, as to why we are not seeing > >>>> this ;-) > >>>> > >>>> The main difference I see between the tegra_defconfig and > >>>> multi_v7_defconfig is all the sound drivers are modules (including > >>>> this one). > >>>> > >>>> So trying a quick modprobe of the hda-tegra driver I do see it hang ... > >>>> > >>>> / # modprobe snd-hda-tegra > >>>> [ 625.213864] snd_hda_tegra: Unknown symbol azx_probe_codecs (err 0) > >>>> [ 625.220215] snd_hda_tegra: Unknown symbol azx_init_streams (err 0) > >>>> [ 625.226480] snd_hda_tegra: Unknown symbol azx_stop_all_streams (err 0) > >>>> [ 625.233168] snd_hda_tegra: Unknown symbol azx_bus_init (err 0) > >>>> [ 625.239062] snd_hda_tegra: Unknown symbol azx_free_streams (err 0) > >>>> [ 625.245314] snd_hda_tegra: Unknown symbol azx_init_chip (err 0) > >>>> [ 625.251321] snd_hda_tegra: Unknown symbol snd_hda_set_power_save (err 0) > >>>> [ 625.258081] snd_hda_tegra: Unknown symbol azx_stop_chip (err 0) > >>>> [ 625.264078] snd_hda_tegra: Unknown symbol azx_codec_configure (err 0) > >>>> [ 625.270607] snd_hda_tegra: Unknown symbol azx_interrupt (err 0) > >>>> [ 840.117528] INFO: task modprobe:137 blocked for more than 120 seconds. > >>>> [ 840.124192] Not tainted 4.2.0-next-20150909-40826-gb799053 #1 > >>>> [ 840.130584] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > >>>> [ 840.138540] modprobe D c09ac3a4 0 137 82 0x00000000 > >>>> [ 840.145123] [<c09ac3a4>] (__schedule) from [<c09ac838>] (schedule+0x34/0x98) > >>>> [ 840.152310] [<c09ac838>] (schedule) from [<c09acaac>] (schedule_preempt_disabled+0xc/0x10) > >>>> [ 840.160734] [<c09acaac>] (schedule_preempt_disabled) from [<c09adeec>] (__mutex_lock_slowpath+0x9c/0x150) > >>>> [ 840.170458] [<c09adeec>] (__mutex_lock_slowpath) from [<c09adfec>] (mutex_lock+0x4c/0x50) > >>>> [ 840.178807] [<c09adfec>] (mutex_lock) from [<c062999c>] (__driver_attach+0x44/0x90) > >>>> [ 840.186627] [<c062999c>] (__driver_attach) from [<c0627fcc>] (bus_for_each_dev+0x54/0x88) > >>>> [ 840.194966] [<c0627fcc>] (bus_for_each_dev) from [<c0628f88>] (bus_add_driver+0xe4/0x1f0) > >>>> [ 840.203305] [<c0628f88>] (bus_add_driver) from [<c062a1d0>] (driver_register+0x78/0xf4) > >>>> [ 840.211475] [<c062a1d0>] (driver_register) from [<c020ac04>] (do_one_initcall+0x80/0x1d0) > >>>> [ 840.219818] [<c020ac04>] (do_one_initcall) from [<c02c8abc>] (do_init_module+0x58/0x354) > >>>> [ 840.228081] [<c02c8abc>] (do_init_module) from [<c02afae8>] (load_module+0x17e0/0x1d8c) > >>>> [ 840.236258] [<c02afae8>] (load_module) from [<c02b016c>] (SyS_init_module+0xd8/0x138) > >>>> [ 840.244260] [<c02b016c>] (SyS_init_module) from [<c0210b00>] (ret_fast_syscall+0x0/0x3c) > >>>> > >>>> Adding some debug it appears to hang on snd-hda-codec-hdmi (the following show > >>>> the order in which modules are being loaded) ... > >>>> > >>>> / # modprobe snd-hda-tegra > >>>> [ 22.450276] snd_hda_tegra: err = -2 > >>>> [ 22.484535] soundcore: err = 0 > >>>> [ 22.488964] snd: err = 0 > >>>> [ 22.493242] snd_timer: err = 0 > >>>> [ 22.498380] snd_pcm: err = 0 > >>>> [ 22.502479] snd_hda_core: err = 0 > >>>> [ 22.508337] snd_hda_codec: err = 0 > >>>> [ 22.513386] snd_hda_tegra: err = 0 > >>>> [ 22.740216] snd_hda_codec_hdmi: err = 0 > >>>> > >>>> [hangs here] > >>>> > >>>> However, if I do the following, this works ... > >>>> > >>>> / # modprobe snd-hda-codec-hdmi > >>>> / # modprobe snd-hda-tegra > >>>> > >>>> So it implies that snd-hda-codec-hdmi needs to be loaded first otherwise it hangs. > >>>> > >>>> Thierry, any thoughts? > >>> > >>> I can't reproduce this. Booting multi_v7_defconfig on my setup works > >>> just fine. I don't ever see snd-hda-codec-hdmi being probed, but then > >>> probing it manually works fine. No hangs. > >> > >> To be clear, booting multi_v7_defconfig works just fine for me too and > >> has been working fine for months. However, the reason I am not seeing > >> the issue Kevin and Tyler are reporting is because I never attempt to > >> "modprobe snd-hda-tegra" after boot. If I do then I see a hang. So I > >> believe the only reason we don't see this is because their setup is > >> loading modules. > > > > snd-hda-tegra is auto-loaded on boot for me as well and I don't see any > > hangs either. I can also unload and reload the module just fine. I've > > tested this on next-20150911. > > What else are you auto-loading? For my testing there appears to be a > sensitivity to order outside of the depmod order. > > Can you try unloading all the sound modules and then do a "modprobe > snd-hda-tegra"? Here's the list of loaded modules right after boot: -sh-4.3# lsmod Module Size Used by snd_hda_tegra 4764 0 snd_hda_codec_hdmi 35010 1 snd_soc_tegra30_i2s 5380 2 snd_soc_tegra_pcm 1184 1 snd_soc_tegra30_i2s snd_soc_tegra_rt5640 3960 0 snd_soc_rt5640 56972 1 snd_soc_tegra_utils 2825 1 snd_soc_tegra_rt5640 snd_soc_rl6231 1897 1 snd_soc_rt5640 snd_soc_core 107271 4 snd_soc_tegra_pcm,snd_soc_rt5640,snd_soc_tegra_rt5640,snd_soc_tegra30_i2s snd_hda_codec 75955 2 snd_hda_codec_hdmi,snd_hda_tegra snd_compress 7363 1 snd_soc_core snd_hda_core 26603 3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_tegra snd_pcm_dmaengine 2943 1 snd_soc_core snd_pcm 69108 7 snd_soc_rt5640,snd_soc_core,snd_hda_codec_hdmi,snd_hda_codec,snd_hda_tegra,snd_pcm_dmaengine,snd_hda_core snd_timer 17264 1 snd_pcm snd_soc_tegra30_ahub 8299 1 snd_soc_tegra30_i2s snd 42248 7 snd_soc_core,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_hda_codec,snd_hda_tegra,snd_compress nouveau 1302185 0 soundcore 858 1 snd tegra_devfreq 5375 0 ttm 65238 1 nouveau Then I went and unloaded a couple of modules until I was left with this: -sh-4.3# lsmod Module Size Used by nouveau 1302185 0 tegra_devfreq 5375 0 ttm 65238 1 nouveau Then I did the following: -sh-4.3# modprobe snd-hda-tegra [ 2243.786143] hdaudio hdaudioC0D3: Unable to bind the codec -sh-4.3# lsmod Module Size Used by snd_hda_tegra 4764 0 snd_hda_codec 75955 1 snd_hda_tegra snd_hda_core 26603 2 snd_hda_codec,snd_hda_tegra snd_pcm 69108 3 snd_hda_codec,snd_hda_tegra,snd_hda_core snd_timer 17264 1 snd_pcm snd 42248 4 snd_timer,snd_pcm,snd_hda_codec,snd_hda_tegra soundcore 858 1 snd nouveau 1302185 0 tegra_devfreq 5375 0 ttm 65238 1 nouveau -sh-4.3# modprobe snd-hda-codec-hdmi -sh-4.3# modprobe -r snd-hda-tegra -sh-4.3# modprobe snd-hda-tegra [ 2263.934328] input: tegra-hda HDMI/DP,pcm=3 as /devices/soc0/70030000.hda/sound/card0/input4 So all worked just fine. Thierry
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