Re: [RFC/PATCH] mwifiex: Driver - Firmware Glitches

Florian Achleitner
2015-04-16T10:43:16Z

On Thursday 16 April 2015 20:19:13 James Cameron wrote:
> On Thu, Apr 16, 2015 at 11:10:02AM +0200, Florian Achleitner wrote:
> > Is the necessity of frequent hardware resets a commonly known issue
> > with this chip/firmware? Anybody else experiencing these?
>
> Yes, but how frequent?

Depends on the specific hardware. Averages follow.

>
> > Currently, we see three different scenarios. One of them is
> > currently not answered by reset. Refer to the upcoming patch.
> >
> > (1) mwifiex_cmd_timeout_func: Timeout cmd .. Ok, after reset.
>
> See this a lot during heavy testing.

Also a lot, maybe once a day in low load.

>
> > (2) Firmware wakeup failed.. Ok, after reset.
>
> Never see this.

Once a day.

>
> > (3) DNLD_CMD: host to card failed. No reset triggered. See patch.
>
> Very rarely see this.

Also very rarely. Once a week, probably.

>
> However, our experience may not be comparable; we are using 8787 with
> a 3.5 kernel, because we haven't the resources to use a later kernel
> or get backports working.
>
> Also, we use WOL (wake on lan) heavily; frequent automatic suspends,
> with a GPIO wakeup in addition to the SDHCI.

We don't use WOL or suspends.

Regards,
Florian