[PATCH] ath10k: protect driver from unsolicited htc ep0 events

Kalle Valo kvalo at qca.qualcomm.com
Thu Mar 19 06:53:50 PDT 2015

Michal Kazior <michal.kazior at tieto.com> writes:

> Some firmware revisions (tested with qca6174
> rm2.0-00088) deliver unsolicited unknown (kind of
> garbled) HTC ep0 event to host in some cases.
> This issue was mainly observed with both qca988x
> and qca6174 being installed on a single host
> system. During driver probing if qca6174 booting
> sequences were somehow deferred (e.g. by qca988x
> implicitly making some resources busy presumably)
> the unsolicited event would came around 1s after
> ATH10K_HTC_MSG_READY_ID was delivered to host for
> qca6174.
> The unsolicited event would confuse driver and
> cause HTT initialization (and subsequently
> driver probing) to fail.
> Make the ep0 event processing more robust. The
> event will still be caught but instead will
> only generate a warning now.
> Signed-off-by: Michal Kazior <michal.kazior at tieto.com>

Thanks, applied.

Kalle Valo

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