AP mode firmware crash on QCA9880-BR4A

[Michal Kazior]

On 17 July 2015 at 00:11, Mercer, Karl <karlmercer at zebra.com> wrote:
> Hi Michal et al,
>
> I am seeing the exact same problem as Martin reported.  I am using ath10k code from openwrt rev 46287 to drive a QCA9882 in AP mode.
> QCA988X firmware version 10.2.4.70-2 crashes, however swapping out this for version 10.1.467.2-1 "fixes" the crash.
> I set the debug_mask to 16182, which gives slightly more verbose debugging.  Unfortunately, I haven't managed to turn on tracing as it causes an unrelated kernel Oops.
> You will see from the following log, there are 2 swba events which result in 2 beacons being sent out (using ath10k_wmi_beacon_send_ref_nowait).  It is after the 2nd beacon is sent that the firmware crashes - this is 100% reproducible.
[...]

Hmm.. The crash coincides with dtim beacon submission. Can you change
dtim period to 1 and 10 (2 tests) and see how many SWBA events it
takes before it crashes respectively, please?


Michał