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 test?
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=y # 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@vger.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 associated 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 for 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 firmware kern :info : [ 78.918594] test_firmware: loading 'nope-test-firmware.bin' kern :warn : [ 78.925405] misc test_firmware: Direct firmware load for nope-test-firmware.bin failed with error -2 kern :info : [ 78.935260] Ignoring firmware sysfs fallback due to sysctl 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 test?
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 loading 'test-firmware.bin' 4 times
best regards,