On 12/1/22 22:02, Zhou, Jie2X wrote: >> 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? Take a look at the kernel documentation (https://www.kernel.org/doc/html/v5.0/driver-api/firmware/fallback-mechanisms.html) which says, "This syfs fallback mechanism may be disabled completely on a system by setting the proc sysctl value ignore_sysfs_fallback to true." Also refer to the sysctl man page: https://manpages.debian.org/testing/procps/sysctl.8.en.html. - Russ > > 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@xxxxxxxxx> > Sent: Thursday, December 1, 2022 10:37 AM > To: Zhou, Jie2X; gregkh@xxxxxxxxxxxxxxxxxxx > Cc: shuah@xxxxxxxxxx; mcgrof@xxxxxxxxxx; Zhang, Tianfei; linux-kselftest@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; 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,
