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Open Source and information security mailing list archives
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Date: Mon, 20 May 2019 17:23:14 -0700 From: Brian Norris <briannorris@...omium.org> To: Avri Altman <Avri.Altman@....com> Cc: Douglas Anderson <dianders@...omium.org>, Ulf Hansson <ulf.hansson@...aro.org>, Kalle Valo <kvalo@...eaurora.org>, Adrian Hunter <adrian.hunter@...el.com>, Arend van Spriel <arend.vanspriel@...adcom.com>, "linux-rockchip@...ts.infradead.org" <linux-rockchip@...ts.infradead.org>, Double Lo <double.lo@...ress.com>, Madhan Mohan R <madhanmohan.r@...ress.com>, "mka@...omium.org" <mka@...omium.org>, Wright Feng <wright.feng@...ress.com>, Chi-Hsien Lin <chi-hsien.lin@...ress.com>, "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>, Shawn Lin <shawn.lin@...k-chips.com>, "brcm80211-dev-list@...ress.com" <brcm80211-dev-list@...ress.com>, YueHaibing <yuehaibing@...wei.com>, Hante Meuleman <hante.meuleman@...adcom.com>, Martin Hicks <mort@...k.org>, Ritesh Harjani <riteshh@...eaurora.org>, Michael Trimarchi <michael@...rulasolutions.com>, Wolfram Sang <wsa+renesas@...g-engineering.com>, Franky Lin <franky.lin@...adcom.com>, Jiong Wu <lohengrin1024@...il.com>, "brcm80211-dev-list.pdl@...adcom.com" <brcm80211-dev-list.pdl@...adcom.com>, "David S. Miller" <davem@...emloft.net>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Naveen Gupta <naveen.gupta@...ress.com> Subject: Re: [PATCH 0/3] brcmfmac: sdio: Deal better w/ transmission errors waking from sleep On Sat, May 18, 2019 at 03:09:44PM +0000, Avri Altman wrote: > > > > This series attempts to deal better with the expected transmission > > errors that we get when waking up the SDIO-based WiFi on > > rk3288-veyron-minnie, rk3288-veyron-speedy, and rk3288-veyron-mickey. > > > > Some details about those errors can be found in > > <https://crbug.com/960222>, but to summarize it here: if we try to > > send the wakeup command to the WiFi card at the same time it has > > decided to wake up itself then it will behave badly on the SDIO bus. > > This can cause timeouts or CRC errors. > Wake-up itself: as part of a WoWlan, or d0i3? Neither, IIUC. (It's definitely not WoWLAN, and D0i3 sounds like an Intel thing.) I believe it's a Broadcom-specific mode. See also Arend's response to this thread: http://lkml.kernel.org/linux-wireless/8c3fa57a-3843-947c-ec6b-a6144ccde1e9@broadcom.com > Looks like this calls for a wifi driver fix, and not WA in the mmc driver. Basically asked and answered in patch 2's thread: https://lkml.kernel.org/lkml/20190520085201.GA1021@kunai/
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