ath10k could not get target info after transition from 32 bit to 64 bit kernel

[Jared Bents]

Hello,

Recently I transitioned a build from a 32 bit build to a 64 bit build.
In the 32 bit build, the wifi modules initialized properly and could
be used.  After moving to the 64 bit build, the modules fail to get
the device information and load firmware.  The other devices on the
pci bus are still working.  For reference, it is an older kernel
version (freescale sdk v2.0 which has linux v4.1).  Just wondering if
anyone has come across this or has any information that may help.
I've done a side by side comparison of the linux configs and haven't
noticed anything different that would seem to be the problem.

Here are the lspci and dmesg printouts from the 32 bit build and the
64 bit build.  As you can see, the driver is mapped to the device but
it fails to get the device information in the 64 bit build.

32 bit (working)

# lspci -k
00:00.0 Class 0604: 1957:0824 pcieport
01:00.0 Class 0280: 168c:003c ath10k_pci
04:00.0 Class 0604: 1957:0824 pcieport
05:00.0 Class 0106: 1b4b:9170 ahci
02:00.0 Class 0604: 1957:0824 pcieport
03:00.0 Class 0280: 168c:003c ath10k_pci

# dmesg
ath10k_pci 0001:03:00.0: enabling device (0000 -> 0002)
ath10k_pci 0001:03:00.0: pci irq msi interrupts 1 irq_mode 0 reset_mode 0
pcieport 0002:04:00.0: Primary bus is hard wired to 0
pci_bus 0002:05: busn_res: [bus 05] end is updated to 05
ath10k_pci 0000:01:00.0: Direct firmware load for
ath10k/cal-pci-0000:01:00.0.bin failed with error -2
ath10k_pci 0001:03:00.0: Direct firmware load for
ath10k/cal-pci-0001:03:00.0.bin failed with error -2
ath10k_pci 0000:01:00.0: qca988x hw2.0 (0x4100016c, 0x043222ff) fw
10.2.4.45 api 4 htt 2.1 wmi 5 cal otp max_sta 128
ath10k_pci 0000:01:00.0: debug 1 debugfs 1 tracing 0 dfs 0 testmode 1
ath: EEPROM regdomain: 0x6a
ath: EEPROM indicates we should expect a direct regpair map
ath: Country alpha2 being used: 00
ath: Regpair used: 0x6a



64 bit (not working)

# lspci -k
00:00.0 Class 0604: 1957:0824 pcieport
01:00.0 Class 0280: 168c:003c ath10k_pci
04:00.0 Class 0604: 1957:0824 pcieport
05:00.0 Class 0106: 1b4b:9170 ahci
02:00.0 Class 0604: 1957:0824 pcieport
03:00.0 Class 0280: 168c:003c ath10k_pci

# dmesg
ath10k_pci 0001:01:00.0: enabling device (0000 -> 0002)
ath10k_pci 0001:01:00.0: pci irq msi interrupts 1 irq_mode 0 reset_mode 0
pci_bus 0002:01: busn_res: [bus 01] end is updated to 01
ath10k_pci 0000:01:00.0: unable to get target info from device
ath10k_pci 0000:01:00.0: could not get target info (1)
ath10k_pci 0000:01:00.0: could not probe fw (1)
ath10k_pci 0001:01:00.0: unable to get target info from device
ath10k_pci 0001:01:00.0: could not get target info (1)
ath10k_pci 0001:01:00.0: could not probe fw (1)

Thank you,
Jared