ath10k: device has crashed during init - qca6174 chipset

[Bartlomiej Grzeskowiak <bartlomiej.grzeskowiak@gmail.com>]

Hi, 

I am trying to use ath10k driver from the latest backports-4.4-rc.2-1 with 
kernel 3.10.65 and qca6174 based wlan module. Could you give me some hints 
about possible problem.
ath10k_core.ko module loaded with skip_otp=y and debug_mask=0xffffffff.

I get following error message:
[ 5301.614749] ath10k_pci 0000:01:00.0: wmi unified ready event not 
received
[ 5301.614749] ath10k_pci 0000:01:00.0: device has crashed during init
[ 5301.644767] ath10k_pci 0000:01:00.0: device has crashed during init
[ 5301.651025] ath10k_pci 0000:01:00.0: failed to wait for target init: -70
[ 5301.661134] ath10k_pci 0000:01:00.0: could not init core (-110)
[ 5301.667310] ath10k_pci 0000:01:00.0: could not probe fw (-110)

Some other important debug messages (I can also provide the whole log if 
needed):
ath10k_pci 0000:01:00.0: found fw version WLAN.RM.2.0-00180-QCARMSWPZ-1
[...]
ath10k_pci 0000:01:00.0: boot get otp board id result 0x00000001 board_id 0 
chip_id 0
ath10k_pci 0000:01:00.0: boot using board name 
'bus=pci,vendor=168c,device=003e,subsystem-vendor=0000,subsystem-
device=0000'
[...]
ath10k_pci 0000:01:00.0: Target ready! transmit resources: 2 size:1792
[...]
ath10k_pci 0000:01:00.0: HTC Service HTT Data connect response: status: 
0x0, assigned ep: 0x1
[...]
ath10k_pci 0000:01:00.0: HTC Service WMI connect response: status: 0x0, 
assigned ep: 0x2
[...]
ath10k_pci 0000:01:00.0: wmi event service ready min_tx_power 0x0000003f 
max_tx_power 0x0000003f ht_cap 0x0000085b vht_cap 0x339011b2 sw_ver0 
0x01000000 sw_ver1 0x0000008f fw_build 0x200700b4 phy_capab 0x00000003 
num_rf_chains 0x00000002 eeprom_rd 0x00000000 num_mem_reqs 0x00000000
ath10k_pci 0000:01:00.0: firmware WLAN.RM.2.0-00180-QCARMSWPZ-1 booted
[...]
ath10k_pci 0000:01:00.0: ath10k_htc_notify_tx_completion: ep 2 skb 8cc3b6c0
ath10k_pci 0000:01:00.0: pci ps timer refcount 0 awake 1
ath10k_pci 0000:01:00.0: pci ps sleep reg refcount 0 awake 1
ath10k_pci 0000:01:00.0: wmi unified ready event not received
ath10k_pci 0000:01:00.0: boot hif stop
[...]
ath10k_pci 0000:01:00.0: boot init ce src ring id 0 entries 16 base_addr 
8e053000
ath10k_pci 0000:01:00.0: boot ce dest ring id 1 entries 512 base_addr 
8e054000
ath10k_pci 0000:01:00.0: boot ce dest ring id 2 entries 128 base_addr 
8e056000
ath10k_pci 0000:01:00.0: boot init ce src ring id 3 entries 32 base_addr 
8e057000
ath10k_pci 0000:01:00.0: boot init ce src ring id 4 entries 4096 base_addr 
8e060000
ath10k_pci 0000:01:00.0: boot ce dest ring id 5 entries 512 base_addr 
8e058000
ath10k_pci 0000:01:00.0: boot init ce src ring id 7 entries 2 base_addr 
8e05a000
ath10k_pci 0000:01:00.0: boot ce dest ring id 7 entries 2 base_addr 
8e05b000
ath10k_pci 0000:01:00.0: boot waiting target to initialise
ath10k_pci 0000:01:00.0: boot target indicator 0
ath10k_pci 0000:01:00.0: boot target indicator 1
ath10k_pci 0000:01:00.0: device has crashed during init
ath10k_pci 0000:01:00.0: failed to wait for target init: -70
ath10k_pci 0000:01:00.0: could not init core (-110)
ath10k_pci 0000:01:00.0: boot hif power down
ath10k_pci 0000:01:00.0: could not probe fw (-110)
ath10k_pci 0000:01:00.0: pci ps timer refcount 0 awake 1
ath10k_pci 0000:01:00.0: pci ps sleep reg refcount 0 awake 1

Thank you
Bartek