linux-kernel - Re: 2.6.18-rc5-mm1 -- bcm43xx: Out of DMA descriptor slots!

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Date:	Sun, 3 Sep 2006 09:55:52 -0700
From:	"Miles Lane" <miles.lane@...il.com>
To:	"Larry Finger" <Larry.Finger@...inger.net>
Cc:	"Michael Buesch" <mb@...sch.de>, "Andrew Morton" <akpm@...l.org>,
	LKML <linux-kernel@...r.kernel.org>, linville@...driver.com
Subject: Re: 2.6.18-rc5-mm1 -- bcm43xx: Out of DMA descriptor slots!

On 9/3/06, Larry Finger <Larry.Finger@...inger.net> wrote:
> Michael Buesch wrote:
> > On Sunday 03 September 2006 11:18, Miles Lane wrote:
> >> Michael, I think this is related to your code (bcm43xx_dma.c).  It is
> >> quite possible that the bug isn't in your code, but rather in the
> >> general management of DMA.
> >
> > Please try latest wireless-2.6 tree. I think it has a bugfix for this.
>
> There is a fix (commit 653d5b55c0125dca97a420b9a5e77fad7adbf3f0) for mac_suspended assertions in the
> latest wireless-2.6. If you just want that fix, use the following:
>
> Index: wireless-2.6/drivers/net/wireless/bcm43xx/bcm43xx_main.c
> ===================================================================
> --- wireless-2.6.orig/drivers/net/wireless/bcm43xx/bcm43xx_main.c
> +++ wireless-2.6/drivers/net/wireless/bcm43xx/bcm43xx_main.c
> @@ -3349,6 +3349,8 @@
>      memset(bcm->dma_reason, 0, sizeof(bcm->dma_reason));
>      bcm->irq_savedstate = BCM43xx_IRQ_INITIAL;
>
> +    bcm->mac_suspended = 1;
> +
>      /* Noise calculation context */
>      memset(&bcm->noisecalc, 0, sizeof(bcm->noisecalc));
>
>
> If this patch is already in your code, and you are still getting the assertions, please let me know.

Thanks.  2.6.18-rc5-mm1 doesn't have this patch.  Andrew, could you
pull a current wireless tree into your next mm release?

Cheerio,
      Miles

-- 
VGER BF report: H 5.12123e-05
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