netdev - Re: [PATCH 6/7] net: wireless: wcn36xx: remove powersaving for wcn3620

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Date:	Mon, 9 Feb 2015 09:54:23 -0800
From:	Bjorn Andersson <bjorn@...o.se>
To:	Andy Green <andy.green@...aro.org>
Cc:	Kalle Valo <kvalo@...eaurora.org>,
	Eugene Krasnikov <k.eugene.e@...il.com>,
	wcn36xx <wcn36xx@...ts.infradead.org>,
	linux-wireless@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH 6/7] net: wireless: wcn36xx: remove powersaving for wcn3620

On Sat, Jan 17, 2015 at 9:11 PM, Andy Green <andy.green@...aro.org> wrote:
> WCN3620 powersaving mode is not stable.  Disable it if we're
> on a wcn3620 chip type.
>
> Signed-off-by: Andy Green <andy.green@...aro.org>
> ---
>  drivers/net/wireless/ath/wcn36xx/main.c |    4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/drivers/net/wireless/ath/wcn36xx/main.c b/drivers/net/wireless/ath/wcn36xx/main.c
> index c4178c7..569d45b 100644
> --- a/drivers/net/wireless/ath/wcn36xx/main.c
> +++ b/drivers/net/wireless/ath/wcn36xx/main.c
> @@ -924,6 +924,10 @@ static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
>                 IEEE80211_HW_AMPDU_AGGREGATION |
>                 IEEE80211_HW_TIMING_BEACON_ONLY;
>
> +       /* 3620 powersaving currently unstable */
> +       if (wcn->chip_version == WCN36XX_CHIP_3620)
> +               wcn->hw->flags &= ~IEEE80211_HW_SUPPORTS_PS;
> +

Hi Andy,

I have the same problem (Data Abort Exception in wcnss) on 3680, this
with my wip smd code and a hacked up remoteproc-pil. I haven't spent
any effort on debugging this, but it looks like it's something related
to what we have ported to mainline (or lack thereof) rather than a
3620 specific issue.

Regards,
Bjorn
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