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

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Message-ID: <44FAE00B.6030701@lwfinger.net>
Date:	Sun, 03 Sep 2006 09:00:43 -0500
From:	Larry Finger <Larry.Finger@...inger.net>
To:	Miles Lane <miles.lane@...il.com>
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!

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.

Larry


-- 
VGER BF report: H 0.427049
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