linux-kernel - Re: [PATCH] brcmfmac: sdio: Increase the default timeouts a bit

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Message-ID: <CAGRGNgXWE=b52Mcy8NsKBZS_4gz-TUiuFipjsuTZh1xjja=uUg@mail.gmail.com>
Date:	Mon, 25 Jan 2016 22:06:35 +1100
From:	Julian Calaby <julian.calaby@...il.com>
To:	Sjoerd Simons <sjoerd.simons@...labora.co.uk>
Cc:	Kalle Valo <kvalo@...eaurora.org>,
	Paul Stewart <pstew@...omium.org>,
	Doug Anderson <dianders@...omium.org>,
	linux-rockchip@...ts.infradead.org,
	Arend van Spriel <arend@...adcom.com>,
	Pieter-Paul Giesberts <pieterpg@...adcom.com>,
	brcm80211-dev-list@...adcom.com,
	linux-wireless <linux-wireless@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Hante Meuleman <meuleman@...adcom.com>,
	Brett Rudley <brudley@...adcom.com>,
	netdev <netdev@...r.kernel.org>,
	"Franky (Zhenhui) Lin" <frankyl@...adcom.com>
Subject: Re: [PATCH] brcmfmac: sdio: Increase the default timeouts a bit

Hi Sjoerd,

On Mon, Jan 25, 2016 at 9:47 PM, Sjoerd Simons
<sjoerd.simons@...labora.co.uk> wrote:
> On a Radxa Rock2 board with a Ampak AP6335 (Broadcom 4339 core) it seems
> the card responds very quickly most of the time, unfortunately during
> initialisation it sometimes seems to take just a bit over 2 seconds to
> respond.
>
> This results intialization failing with message like:
>   brcmf_c_preinit_dcmds: Retreiving cur_etheraddr failed, -52
>   brcmf_bus_start: failed: -52
>   brcmf_sdio_firmware_callback: dongle is not responding
>
> Increasing the timeout to allow for a bit more headroom allows the
> card to initialize reliably.
>
> A quick search online after diagnosing/fixing this showed that Google
> has a similar patch in their ChromeOS tree, so this doesn't seem
> specific to the board I'm using.
>
> Signed-off-by: Sjoerd Simons <sjoerd.simons@...labora.co.uk>

Looks sane to me.

Reviewed-by: Julian Calaby <julian.calaby@...il.com>

>  drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
> index dd66143..75ac4bd 100644
> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
> @@ -45,8 +45,8 @@
>  #include "chip.h"
>  #include "firmware.h"
>
> -#define DCMD_RESP_TIMEOUT      msecs_to_jiffies(2000)
> -#define CTL_DONE_TIMEOUT       msecs_to_jiffies(2000)
> +#define DCMD_RESP_TIMEOUT      msecs_to_jiffies(2500)
> +#define CTL_DONE_TIMEOUT       msecs_to_jiffies(2500)
>
>  #ifdef DEBUG
>
> --
> 2.7.0
>
> --
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-- 
Julian Calaby

Email: julian.calaby@...il.com
Profile: http://www.google.com/profiles/julian.calaby/