failed to fetch board data QCA6174

[Luka Karinja]

 >
 > > Hello. I'm trying to get a M.2 QCA6174 working on my MSI B150Mortar 
motherboard. i did try all the various firmware versions from 
https://github.com/kvalo/ath10k-firmware more or less with the same 
errors as bellow
 > >
 > > in dmesg i get: failed to fetch board data for 
bus=pci,vendor=168c,device=003e,subsystem-vendor=0000,subsystem-device=0000 
from ath10k/QCA6174/hw3.0/board-2.bin
 > >
 > > when trying to get the device up i get: RTNETLINK answers: Resource 
temporarily unavailable
 > >
 > > [ 2026.219245] ath10k_pci 0000:05:00.0: pci irq msi oper_irq_mode 2 
irq_mode 0 reset_mode 0
 > > [ 2026.477510] ath10k_pci 0000:05:00.0: qca6174 hw3.2 target 
0x05030000 chip_id 0x00340aff sub 0000:0000
 > > [ 2026.477517] ath10k_pci 0000:05:00.0: kconfig debug 0 debugfs 1 
tracing 0 dfs 0 testmode 0
 > > [ 2026.478640] ath10k_pci 0000:05:00.0: firmware ver 
WLAN.RM.4.4.1-00026-QCARMSWP-1 api 6 features wowlan,ignore-otp,raw-mode 
crc32 7b90c3fc
 > > [ 2026.542196] ath10k_pci 0000:05:00.0: failed to fetch board data 
for 
bus=pci,vendor=168c,device=003e,subsystem-vendor=0000,subsystem-device=0000 
from ath10k/QCA6174/hw3.0/board-2.bin
 > >
 >
 > Not sure what kernel and driver do you have?
 >
 > This should already fix this case - 
https://patchwork.kernel.org/patch/9486941/
 >

I have kernel 4.12.10 (Arch linux) i did try with ath10k WLAN.RM.2.4, 
4.4, 4.4.1 firmware