logger: use strerror()

[marc-hb]

Useful error messages when forgetting to use "sudo" or to change
permissions in udev.

Some places were printing the errno decimal. Others no specific error
at all.

Sample outputs:

error: Unable to open version file /sys/kernel/debug/sof/fw_version: Permission denied
error: Unable to open version file /sys/kernel/debug/sof/fw_version: No such file or directory

Signed-off-by: Marc Herbert marc.herbert@intel.com

[marc-hb]

https://sof-ci.01.org/sofpr/PR3984/build8506/devicetest/ is the usual suspend/resume TIMEOUT

[lgirdwood]

@marc-hb any ideas why we are seeing testbench and yamlint timeout ?

[cujomalainey]

@marc-hb any ideas why we are seeing testbench and yamlint timeout ?

This is happening across multiple PRs.

[marc-hb]

@marc-hb any ideas why we are seeing testbench and yamlint timeout ?

Tentative successful fix in #3992 , please review.

[cujomalainey]

@marc-hb please see #3992 (comment)

[lgirdwood]

SOFCI TEST

[lgirdwood]

@zrombel good to merge here ?

[lgirdwood]

SOFCI TEST

[marc-hb]

Only one aplay input/output error in https://sof-ci.01.org/sofpr/PR3984/build8568/devicetest/?model=BYT_MB_NOCODEC&testcase=simultaneous-playback-capture, totally unrelated to this PR.

Quickbuild scheduler lost, confused and hung as usual (PTS-31119 issue closed without testing) but it already passed in the past on earlier commit 819d226eae61d12, see results at https://sof-ci.01.org/sof-pr-viewer/#/build/PR3984/build6235538
(Note to self: always record URLs to elusive Quickbuild runs, saves time finding them again after a force-push)

As you can see if you click on the "force-push" button above, there is not difference between earlier commit 819d226eae61d12 and the current one 8b1eab3 , it was just an empty date change to retrigger Github Actions after fixing... another, unrelated CI issue (#3992), oh my...

[lgirdwood]

@marc-hb thanks, I do remember the last spin passing Internal CI which has had some stability issues over the last few days. I think we are good to merge.