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From:   "Zhou, Jie2X" <jie2x.zhou@intel.com>
To:     "Weight, Russell H" <russell.h.weight@intel.com>,
        "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>
CC:     "shuah@kernel.org" <shuah@kernel.org>,
        "mcgrof@kernel.org" <mcgrof@kernel.org>,
        "Zhang, Tianfei" <tianfei.zhang@intel.com>,
        "linux-kselftest@vger.kernel.org" <linux-kselftest@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "Li, Philip" <philip.li@intel.com>
Subject: Re: fw_fallback.sh test failed in Debian 11
Thread-Topic: fw_fallback.sh test failed in Debian 11
Thread-Index: AQHZA5lIOHIFr50OcUq4S5sLOYsQua5VjYWAgAFsaHyAAMJuAIAAd7cVgAAD/YCAAAUgCIAAF3IAgAHKUkU=
Date:   Fri, 2 Dec 2022 06:02:02 +0000
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>The above message looks like the problem. Firmware sysfs fallback has been=
 turned off
>on this system using sysctl. Can you try turning it on and rerunning the t=
est?
Sorry, I don't know how to turn on firmware sysfs fallback.
Could you tell me?

I search the firmware fallback options in kernel config.
CONFIG_FW_LOADER_USER_HELPER=3Dy
# CONFIG_FW_LOADER_USER_HELPER_FALLBACK is not set

best regards,

________________________________________
From: Weight, Russell H <russell.h.weight@intel.com>
Sent: Thursday, December 1, 2022 10:37 AM
To: Zhou, Jie2X; gregkh@linuxfoundation.org
Cc: shuah@kernel.org; mcgrof@kernel.org; Zhang, Tianfei; linux-kselftest@vg=
er.kernel.org; linux-kernel@vger.kernel.org; Li, Philip
Subject: Re: fw_fallback.sh test failed in Debian 11


On 11/30/22 17:28, Zhou, Jie2X wrote:
>> How much of this path exists on your machine?
>> /sys/devices/virtual/misc/test_firmware/trigger_request
> This path exists.
>
>> And is there anything in the dmesg output that indicates a failure assoc=
iated with
>> the test_firmware device?
> Yes.
>
> kern  :info  : [   77.858068] test_firmware: loading 'test-firmware.bin'
> kern  :info  : [   77.864705] test_firmware: loaded: 8
> kern  :info  : [   77.874250] test_firmware: loading 'test-firmware.bin'
> kern  :warn  : [   77.880672] misc test_firmware: Direct firmware load fo=
r test-firmware.bin failed with error -2
> kern  :info  : [   77.890106] test_firmware: load of 'test-firmware.bin' =
failed: -2
> kern  :info  : [   78.896662] test_firmware: loading ''
> kern  :info  : [   78.901059] test_firmware: load of '' failed: -22
> kern  :info  : [   78.907422] test_firmware: loading ''
> kern  :err   : [   78.912278] test_firmware: failed to async load firmwar=
e
> kern  :info  : [   78.918594] test_firmware: loading 'nope-test-firmware.=
bin'
> kern  :warn  : [   78.925405] misc test_firmware: Direct firmware load fo=
r nope-test-firmware.bin failed with error -2
> kern  :info  : [   78.935260] Ignoring firmware sysfs fallback due to sys=
ctl knob

The above message looks like the problem. Firmware sysfs fallback has been =
turned off
on this system using sysctl. Can you try turning it on and rerunning the te=
st?

Thanks,
- Russ

> kern  :info  : [   78.941934] test_firmware: load of 'nope-test-firmware.=
bin' failed: -2
> kern  :info  : [   78.962155] test_firmware: loading 'test-firmware.bin'
> kern  :info  : [   78.968232] test_firmware: loaded: 9
> kern  :info  : [   78.986063] test_firmware: loading 'test-firmware.bin'
> kern  :info  : [   78.992269] test_firmware: loaded: 9
> kern  :info  : [   79.023611] test_firmware: reset
> kern  :info  : [   79.028466] test_firmware: batched sync firmware loadin=
g 'test-firmware.bin' 4 times
>
> best regards,