[Android 10] Problem loading snd_hda_intel driver at boot

[Michael Goffioul]

Hi all,

I'm having a problem loading the sound driver at boot in my Android 10 port, and I'm hoping somebody could shed some light.

I've rewritten the patch that add module loading to init/ueventd for Android 10, see attached. As there is now a uevent handler in init, I figured we could just piggy back onto it, instead of adding our own. It does not implement module blacklisting and deferred-loading, but this shouldn't have any impact in my current scenario.

The problem is that when my Intel-based device boots, even though the module snd_hda_intel is loaded through ueventd, there is no device created in /dev/snd/ and audio is not working. I've also attached my dmesg output, which contains debug statement from ueventd/modalias_handler (look for "modalias"). The only relevant things I can spot in the logs are the following:

    [    7.235638] hdaudio hdaudioC0D0: Unable to bind the codec
    [    7.236386] hdaudio hdaudioC0D2: Unable to bind the codec

After boot, if I reload the module manually with the following commands:

    rmmod snd_hda_intel

    modprobe snd_had_intel

then module is loaded correctly, I can see the expected output (see attached) in dmesg and audio is working in Android

This audio problem is the last bit I need to fix to have a initial functional build of Android 10 from android-x86. Any help to chase down this issue would be greatly welcomed.

Thanks,

Michael.

[youling 257]

Bliss os Android 10 used your uevent patch, https://github.com/BlissRoms-x86/platform_system_core/commit/3ca28ba1f39b449155b973b9b939e6d0fc4155e6

some modules load failed.

modalias: Cannot load module: Module 'snd-intel-sst-acpi' not in dependency file

modalias: Cannot load module: Module 'snd-soc-rt5640' not in dependency file

[ 6.843488] ueventd: Parsing file /ueventd.rc...

[ 6.844000] ueventd: Parsing file /vendor/ueventd.rc...

[ 6.844036] ueventd: Unable to read config file '/vendor/ueventd.rc': open() failed: No such file or directory

[ 6.844064] ueventd: Parsing file /odm/ueventd.rc...

[ 6.844097] ueventd: Unable to read config file '/odm/ueventd.rc': open() failed: No such file or directory

[ 6.844121] ueventd: Parsing file /ueventd.android_x86_64.rc...

[ 6.846560] ueventd: Parsing file /system/lib/modules/5.4.0-rc8-android-x86_64+/modules.alias...

[ 6.852316] ueventd: Parsing file /system/lib/modules/modules.alias...

[ 6.896452] apexd: Bootstrap subcommand detected

[ 6.920051] apexd: Scanning /system/apex for embedded keys

[ 6.922598] apexd: Scanning /product/apex for embedded keys

[ 6.922975] apexd: ... does not exist. Skipping

[ 6.923291] apexd: Scanning /system/apex looking for APEX packages.

[ 6.923738] apexd: Found /system/apex/com.android.conscrypt

[ 6.924386] apexd: Skipped when bootstrapping

[ 6.924699] apexd: Found /system/apex/com.android.media

[ 6.925358] apexd: Skipped when bootstrapping

[ 6.925666] apexd: Found /system/apex/com.android.tzdata

[ 6.931120] printk: apexd: 9 output lines suppressed due to ratelimiting

[ 6.986158] modalias: Loading kernel module '8723bs' for alias 'sdio:c07v024CdB723'

[ 6.987481] modalias: Loading kernel module 'snd-intel-sst-acpi' for alias 'acpi:80860F28:80860F28:'

[ 6.987586] modalias: Cannot load module: Module 'snd-intel-sst-acpi' not in dependency file

[ 6.987993] modalias: Loading kernel module 'snd-intel-sst-acpi' for alias 'acpi:80860F28:80860F28:'

[ 6.988010] modalias: Cannot load module: Module 'snd-intel-sst-acpi' not in dependency file

[ 6.988018] modalias: Loading kernel module 'snd-soc-rt5651' for alias 'acpi:10EC5640:10EC5640:'

[ 6.988042] modalias: Cannot load module: Module 'snd-soc-rt5651' not in dependency file

[ 6.988057] modalias: Loading kernel module 'snd-soc-rt5640' for alias 'acpi:10EC5640:10EC5640:'

[ 6.988072] modalias: Cannot load module: Module 'snd-soc-rt5640' not in dependency file

[ 6.988442] modalias: Loading kernel module 'snd-soc-rt5651' for alias 'acpi:10EC5640:10EC5640:'

[ 6.988457] modalias: Cannot load module: Module 'snd-soc-rt5651' not in dependency file

[ 6.988471] modalias: Loading kernel module 'snd-soc-rt5640' for alias 'acpi:10EC5640:10EC5640:'

[ 6.988484] modalias: Cannot load module: Module 'snd-soc-rt5640' not in dependency file

[ 6.990463] modalias: Loading kernel module 'soc_button_array' for alias 'acpi:INTCFD9:PNP0C40:'

[ 6.994115] modalias: Loading kernel module 'dwc3-pci' for alias 'pci:v00008086d00000F37sv00008086sd00007270bc0Csc03i80'

[ 6.994137] modalias: Cannot load module: Module 'dwc3-pci' not in dependency file

[ 6.994142] modalias: Loading kernel module '8250_dw' for alias 'acpi:80860F0A:80860F0A:'

[ 6.994741] modalias: Loading kernel module 'dwc3-pci' for alias 'pci:v00008086d00000F37sv00008086sd00007270bc0Csc03i80'

[ 6.994755] modalias: Cannot load module: Module 'dwc3-pci' not in dependency file

[ 6.995822] modalias: Loading kernel module 'i915' for alias 'pci:v00008086d00000F31sv00008086sd00007270bc03sc00i00'

[ 7.020061] modalias: Loaded kernel module kernel/drivers/i2c/algos/i2c-algo-bit.ko

[ 7.020960] byt_gpio INT33FC:02: [Firmware Bug]: pin 21 forcibly re-configured as GPIO

[ 7.021734] modalias: Loaded kernel module kernel/drivers/input/misc/soc_button_array.ko

[ 7.032229] 80860F0A:00: ttyS1 at MMIO 0x90b19000 (irq = 16, base_baud = 2764800) is a 16550A

[ 7.032427] serial serial0: tty port ttyS1 registered

[ 7.044061] 80860F0A:01: ttyS2 at MMIO 0x90b1b000 (irq = 17, base_baud = 2764800) is a 16550A

[ 7.048166] modalias: Loaded kernel module kernel/drivers/tty/serial/8250/8250_dw.ko

[ 7.048276] cfg80211: Loading compiled-in X.509 certificates for regulatory database

[ 7.048410] modalias: Loaded kernel module kernel/drivers/gpu/drm/drm.ko

[ 7.048826] modalias: Loading kernel module '8250_dw' for alias 'acpi:80860F0A:80860F0A:'

[ 7.050247] modalias: Loaded kernel module kernel/drivers/video/fbdev/core/sysimgblt.ko

[ 7.051907] modalias: Loading kernel module 'processor_thermal_device' for alias 'acpi:INT3401:'

[ 7.054918] modalias: Loaded kernel module kernel/drivers/video/fbdev/core/sysfillrect.ko

[ 7.055956] modalias: Loaded kernel module kernel/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.ko

[ 7.056355] modalias: Loaded kernel module kernel/drivers/video/fbdev/core/syscopyarea.ko

[ 7.062866] int3401 thermal INT3401:00: Creating sysfs group for PROC_THERMAL_PLATFORM_DEV

[ 7.063069] modalias: Loaded kernel module kernel/drivers/thermal/intel/int340x_thermal/processor_thermal_device.ko

alias platform:bytcht_es8316 snd-soc-sst-byt-cht-es8316

alias platform:bytcr_rt5651 snd-soc-sst-bytcr-rt5651

alias platform:bytcr_rt5640 snd-soc-sst-bytcr-rt5640

alias platform:sst-atom-hifi2-platform snd-soc-sst-atom-hifi2-platform

alias platform:sst-mfld-platform snd-soc-sst-atom-hifi2-platform

alias sst snd-intel-sst-pci

alias acpi*:80860F28:* snd-intel-sst-acpi

alias acpi*:808622A8:* snd-intel-sst-acpi

alias sst snd-intel-sst-acpi

alias acpi*:10EC5651:* snd-soc-rt5651

alias acpi*:10EC5640:* snd-soc-rt5651

alias i2c:rt5651 snd-soc-rt5651

alias i2c:rt5640 snd-soc-rt5640

alias i2c:rt5639 snd-soc-rt5640

alias i2c:rt5642 snd-soc-rt5640

alias acpi*:INT33CA:* snd-soc-rt5640

alias acpi*:10EC3276:* snd-soc-rt5640

alias acpi*:10EC5640:* snd-soc-rt5640

alias acpi*:10EC5642:* snd-soc-rt5640

alias acpi*:INTCCFFD:* snd-soc-rt5640

alias i2c:es8316 snd-soc-es8316

alias of:N*T*Ceverest,es8316 snd-soc-es8316

alias of:N*T*Ceverest,es8316C* snd-soc-es8316

alias acpi*:ESSX8316:* snd-soc-es8316

[Michael Goffioul]

Sounds like a underscore vs. dash problem in module filename and module alias name. My 4.19.50 kernel uses snd_intel_sst_acpi in modules.alias, but snd-intel-sst-acpi.ko in modules.dep. The Android code that parses modules.dep will convert any dash in the filename to an underscore, to match it against the alias name: https://android.googlesource.com/platform/system/core/+/refs/tags/android-10.0.0_r2/init/modalias_handler.cpp#58

It seems that this convention doesn't stand anymore in your 5.4.0 kernel, the alias name also uses dashes.

Michael.

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[youling 257]

How to fix this problem?

Bliss os 12 build include the "libcutils: add probe_module" patch, but no help for me load modules on 5.5 kernel Bliss os 12.

https://forum.xda-developers.com/showpost.php?p=81698039&postcount=239

在 2019年11月21日星期四 UTC+8上午1:52:40，Michael Goffioul写道：

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[Michael Goffioul]

You may try to comment the code line I highlighted.

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[Mauro Rossi]

Hi Michael,
if the modalias with new kernels 5.4 and later already uses underscore instead of dash,
the line you mentioned would not do any replace, so commenting it does not solve,
correct?

[Michael Goffioul]

If modalias uses underscores, then you need the mapping from dash to underscore when parsing the dep file.

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[Mauro Rossi]

Hi Michael, 

I have tested commenting that line and it caused the following regression with kernel 5.4 and later

The dmesg lines with "not in dependency file" are printed by InsmodWithDeps()

in http://git.osdn.net/view?p=android-x86/system-core.git;a=blob;f=init/modalias_handler.cpp;h=ef33d40a6e6a5fef95b6996c74ce0d9ec6b87d19;hb=refs/heads/q-x86

[   21.522847] modalias: Loading kernel module 'intel_hid' for alias 'acpi:INT33D5:'

[   21.522877] modalias: Cannot load module: Module 'intel_hid' not in dependency file

[   21.527153] modalias: Loading kernel module 'intel_hid' for alias 'acpi:INT33D5:'

[   21.528079] modalias: Cannot load module: Module 'intel_hid' not in dependency file

[   21.530964] modalias: Loading kernel module 'int3403_thermal' for alias 'acpi:INT3403:'

[   21.531978] modalias: Loading kernel module 'pinctrl_geminilake' for alias 'acpi:INT3453:INT3453:'

[   21.534550] modalias: Cannot load module: Module 'pinctrl_geminilake' not in dependency file

[   21.538467] modalias: Loaded kernel module kernel/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.ko

[   21.539461] modalias: Loading kernel module 'pinctrl_geminilake' for alias 'acpi:INT3453:INT3453:'

[   21.543777] modalias: Loaded kernel module kernel/drivers/thermal/intel/int340x_thermal/int3403_thermal.ko

[   21.545754] modalias: Cannot load module: Module 'pinctrl_geminilake' not in dependency file

[   21.546557] modalias: Loading kernel module 'int3403_thermal' for alias 'acpi:INT3403:'

[   21.548630] modalias: Loading kernel module 'pinctrl_geminilake' for alias 'acpi:INT3453:INT3453:'

[   21.551533] modalias: Cannot load module: Module 'pinctrl_geminilake' not in dependency file

[   21.551539] modalias: Loading kernel module 'efivars' for alias 'platform:efivars'

[   21.554397] modalias: Loading kernel module 'pinctrl_geminilake' for alias 'acpi:INT3453:INT3453:'

[   21.555528] modalias: Cannot load module: Module 'pinctrl_geminilake' not in dependency file 

On Friday, May 8, 2020 at 2:03:49 PM UTC+2, Michael Goffioul wrote:

If modalias uses underscores, then you need the mapping from dash to underscore when parsing the dep file.

On Fri, May 8, 2020 at 1:27 AM Mauro Rossi <issor...@gmail.com> wrote:

Hi Michael,
if the modalias with new kernels 5.4 and later already uses underscore instead of dash,
the line you mentioned would not do any replace, so commenting it does not solve,
correct?

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[Michael Goffioul]

Check your alias and dep file. If the alias file uses underscores, then you shouldn't comment that line. To be honest, I don't know where that alias snippet reported with dashes is coming from. My linux kernel 5.5 uses underscores in the alias file.

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