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[Michal Kazior]

On 13 January 2016 at 15:45, Alexey Ivanov <alexeyivan at gmail.com> wrote:
>>Strange..
>
> Do you have any idea what it can be?
> "map pages failed" seems to be a result of failing to vmap() buffer in
> fw_map_pages_buf() in firmware_loading_store()

It's the same message as when you didn't have the cal.bin file at all.
Are you sure you placed it correctly? Perhaps a filename typo?

Another idea is initramfs which is used during early boot and which
doesn't include files from rootfs (meaning you'd have to rebuild it) -
not sure if this is the case though. You can rule it out by reloading
the driver after booting so that it surely has access to your rootfs's
/lib/firmware:

  rmmod ath10k_pci && modprobe ath10k_pci


Michał