I get the following error when I try to install

$ sudo dpkg -i ath10k-dkms_1.0_all.deb 
Selecting previously unselected package ath10k-dkms.
(Reading database ... 192381 files and directories currently installed.)
Preparing to unpack ath10k-dkms_1.0_all.deb ...
Unpacking ath10k-dkms (1.0) ...
Setting up ath10k-dkms (1.0) ...
Loading new ath10k-1.0 DKMS files...
First Installation: checking all kernels...
Building only for 4.2.0-rc4-wl-ath
Building for architecture x86_64
Building initial module for 4.2.0-rc4-wl-ath
ERROR (dkms apport): unable to determine source package for ath10k-dkms
Error! Bad return status for module build on kernel: 4.2.0-rc4-wl-ath (x86_64)
Consult /var/lib/dkms/ath10k/1.0/build/make.log for more information.
dpkg: error processing package ath10k-dkms (--install):
 subprocess installed post-installation script returned error exit status 1
Processing triggers for initramfs-tools (0.103ubuntu4.2) ...
update-initramfs: Generating /boot/initrd.img-4.2.0-rc4-wl-ath
Errors were encountered while processing:
 ath10k-dkms

Looking into the make.log gives: 
$ cat /var/lib/dkms/ath10k/1.0/build/make.log
DKMS make.log for ath10k-1.0 for kernel 4.2.0-rc4-wl-ath (x86_64)
Tue Aug  4 10:18:14 PDT 2015
make -C /lib/modules/4.2.0-rc4-wl-ath/build M=/var/lib/dkms/ath10k/1.0/build/driver modules
make[1]: Entering directory `/home/marek/ath10k/ath-master'
make[1]: warning: jobserver unavailable: using -j1.  Add `+' to parent make rule.
  CC [M]  /var/lib/dkms/ath10k/1.0/build/driver/compat/main.o
  CC [M]  /var/lib/dkms/ath10k/1.0/build/driver/compat/backport-4.0.o
  CC [M]  /var/lib/dkms/ath10k/1.0/build/driver/compat/backport-4.1.o
  CC [M]  /var/lib/dkms/ath10k/1.0/build/driver/compat/backport-4.2.o
/var/lib/dkms/ath10k/1.0/build/driver/compat/backport-4.2.c:14:28: error: static declaration of ‘scatterwalk_ffwd’ follows non-static declaration
 static struct scatterlist *scatterwalk_ffwd(struct scatterlist dst[2],
                            ^
In file included from /var/lib/dkms/ath10k/1.0/build/driver/compat/backport-4.2.c:11:0:
include/crypto/scatterwalk.h:105:21: note: previous declaration of ‘scatterwalk_ffwd’ was here
 struct scatterlist *scatterwalk_ffwd(struct scatterlist dst[2],
                     ^
/var/lib/dkms/ath10k/1.0/build/driver/compat/backport-4.2.c: In function ‘crypto_backport_convert’:
/var/lib/dkms/ath10k/1.0/build/driver/compat/backport-4.2.c:50:9: error: implicit declaration of function ‘aead_request_ctx’ [-Werror=implicit-function-declaration]
  struct aead_old_request *nreq = aead_request_ctx(req);
         ^
/var/lib/dkms/ath10k/1.0/build/driver/compat/backport-4.2.c:50:34: warning: initialization makes pointer from integer without a cast [enabled by default]
  struct aead_old_request *nreq = aead_request_ctx(req);
                                  ^
/var/lib/dkms/ath10k/1.0/build/driver/compat/backport-4.2.c:59:2: error: implicit declaration of function ‘aead_request_flags’ [-Werror=implicit-function-declaration]
  aead_request_set_callback(&nreq->subreq, aead_request_flags(req),
  ^
cc1: some warnings being treated as errors
make[3]: *** [/var/lib/dkms/ath10k/1.0/build/driver/compat/backport-4.2.o] Error 1
make[2]: *** [/var/lib/dkms/ath10k/1.0/build/driver/compat] Error 2
make[1]: *** [_module_/var/lib/dkms/ath10k/1.0/build/driver] Error 2
make[1]: Leaving directory `/home/marek/ath10k/ath-master'
make: *** [all] Error 2


Note that I also tried the steps from #190 (except I used the .tar.gz file). Putting the name, dmesg and lspci information incase it's relevant:

$ uname -a
Linux marek-Alienware-15 4.2.0-rc4-wl-ath #1 SMP Mon Aug 3 17:18:38 PDT 2015 x86_64 x86_64 x86_64 GNU/Linux

$ dmesg | grep ath10k
[   24.598243] ath10k_pci 0000:03:00.0: pci irq msi-x interrupts 8 irq_mode 0 reset_mode 0
[   24.920476] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/cal-pci-0000:03:00.0.bin failed with error -2
[   24.920485] ath10k_pci 0000:03:00.0: Falling back to user helper
[   24.960485] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/QCA6174/hw2.1/board-pci-168c:003e:1a56:1525.bin failed with error -2
[   24.960494] ath10k_pci 0000:03:00.0: Falling back to user helper
[   24.961605] ath10k_pci 0000:03:00.0: failed to load spec board file, falling back to generic: -11
[   25.002120] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/QCA6174/hw2.1/firmware-5.bin failed with error -2
[   25.002129] ath10k_pci 0000:03:00.0: Falling back to user helper
[   25.003287] ath10k_pci 0000:03:00.0: could not fetch firmware file 'ath10k/QCA6174/hw2.1/firmware-5.bin': -11
[   25.119241] ath10k_pci 0000:03:00.0: otp calibration failed: 3
[   25.119321] ath10k_pci 0000:03:00.0: failed to run otp: -22
[   25.119386] ath10k_pci 0000:03:00.0: could not init core (-22)
[   25.119506] ath10k_pci 0000:03:00.0: could not probe fw (-22)

$ lspci -nnn | grep -i atheros
02:00.0 Ethernet controller [0200]: Qualcomm Atheros Killer E2200 Gigabit Ethernet Controller [1969:e091] (rev 10)
03:00.0 Network controller [0280]: Qualcomm Atheros Device [168c:003e] (rev 20)