[PATCH 4.3] ath10k: fix DMA related firmware crashes on multiple devices

[Felix Fietkau]

On 2015-09-14 09:00, Kalle Valo wrote:
> Felix Fietkau <nbd at openwrt.org> writes:
> 
>> Some platforms really don't like DMA bursts of 256 bytes, and this
>> causes the firmware to crash when sending beacons.
>> Also, changing this based on the firmware version does not seem to make
>> much sense, so use 128 bytes for all versions.
>>
>> Cc: stable at vger.kernel.org
>> Signed-off-by: Felix Fietkau <nbd at openwrt.org>
> 
> Nice, good catch! Just to make sure, this fixes the issues some people
> have reported that 10.1 firmware works but 10.2 firmware crashes when
> starting beaconing?
Yes. I was able to reproduce that issue myself on a Gateworks Laguna
device, which is among the affected devices reported in that email
thread. This patch fixes it for me.

- Felix