[PATCH v2] wcn36xx: Fix dynamic power saving

Ramon Fried rfried at codeaurora.org
Mon Dec 11 07:49:32 PST 2017


On Mon, Dec 11, 2017 at 07:41:40AM -0800, Bjorn Andersson wrote:
> On Mon 11 Dec 07:34 PST 2017, Ramon Fried wrote:
> 
> > On Mon, Dec 11, 2017 at 10:52:22AM +0200, Loic Poulain wrote:
> > > Since driver does not report hardware dynamic power saving cap,
> > > this is up to the mac80211 to manage power saving timeout and
> > > state machine, using the ieee80211 config callback to report
> > > PS changes. This patch enables/disables PS mode according to
> > > the new configuration.
> > > 
> > > Remove old behaviour enabling PS mode in a static way, this make
> > > the device unusable when power save is enabled since device is
> > > forced to PS regardless RX/TX traffic.
> > > 
> > 
> > Hi.
> > I tried to see if this patch solves the ping delay once power save is
> > turned on and it appears it doesn't (log below).
> > I do see some change in the delay though in comparison to testing without the patch.
> > Bjorn, How did you test it ?
> > 
> 
> Without this patch I get ping times around a second and SSH is not
> usable, with this patch I see similar ping times as you, but SSH is
> usable.
> 
> I have not been able to run iperf, because I keep hitting
> https://bugs.96boards.org/show_bug.cgi?id=663
> 
> Regards,
> Bjorn
> 
I will test tomorrow the ping times with the prima driver, let's see
what performance i'll get there.

Thanks,
Ramon
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