From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jon Hunter Subject: Re: [GIT PULL 9/9] ARM: tegra: Default configuration updates for v4.3-rc1 Date: Fri, 11 Sep 2015 14:10:59 +0100 Message-ID: <55F2D2E3.4010906@nvidia.com> References: <1439563720-13189-1-git-send-email-thierry.reding@gmail.com> <1439563720-13189-10-git-send-email-thierry.reding@gmail.com> <20150819091358.GA26627@ulmo> <1439977724.4135.90.camel@collabora.co.uk> <20150819103305.GF26627@ulmo> <55F2AF45.5040706@nvidia.com> <20150911123759.GA8473@ulmo> Mime-Version: 1.0 Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20150911123759.GA8473@ulmo> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Thierry Reding Cc: Kevin Hilman , Tyler Baker , Sjoerd Simons , "arm-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org" , linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Alexandre Courbot , linux-arm-kernel , Stephen Warren , Kevin Hilman , Olof Johansson List-Id: linux-tegra@vger.kernel.org On 11/09/15 13:38, Thierry Reding wrote: > * PGP 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] [] (__schedule) from [] (schedule+0x34/0x98) >> [ 840.152310] [] (schedule) from [] (schedule_preempt_disabled+0xc/0x10) >> [ 840.160734] [] (schedule_preempt_disabled) from [] (__mutex_lock_slowpath+0x9c/0x150) >> [ 840.170458] [] (__mutex_lock_slowpath) from [] (mutex_lock+0x4c/0x50) >> [ 840.178807] [] (mutex_lock) from [] (__driver_attach+0x44/0x90) >> [ 840.186627] [] (__driver_attach) from [] (bus_for_each_dev+0x54/0x88) >> [ 840.194966] [] (bus_for_each_dev) from [] (bus_add_driver+0xe4/0x1f0) >> [ 840.203305] [] (bus_add_driver) from [] (driver_register+0x78/0xf4) >> [ 840.211475] [] (driver_register) from [] (do_one_initcall+0x80/0x1d0) >> [ 840.219818] [] (do_one_initcall) from [] (do_init_module+0x58/0x354) >> [ 840.228081] [] (do_init_module) from [] (load_module+0x17e0/0x1d8c) >> [ 840.236258] [] (load_module) from [] (SyS_init_module+0xd8/0x138) >> [ 840.244260] [] (SyS_init_module) from [] (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. Did you try "modprobe snd-hda-tegra"? Fails for me 100% of the time. > What I do see is that after a little while network stops working. I > noticed primarily because I boot with an NFS root, so the kernel started > complaining about the NFS server not responding. Being on an NFS root > could be one reason why this works for me, not sure what the kernelci > labs are running. I don't see the network issues with tegra_defconfig. > I've also tried a tegra_defconfig with all of sound support built as > modules and that all works perfectly. > > I'll investigate the multi_v7_defconfig network issues, perhaps that'll > give me some clues, or perhaps even allow me to reproduce the original > issue. Well I am not using any networking and booting with a simple ramdisk so I don't think that is the right place to look. Cheers Jon