From mboxrd@z Thu Jan 1 00:00:00 1970 From: Larry Finger Date: Mon, 22 Nov 2010 13:12:21 -0600 Subject: b43 error under heavy load In-Reply-To: <1290451982.20888.2.camel@maggie> References: <4CEAB969.20702@lwfinger.net> (sfid-20101122_194209_226222_FFFFFFFFA98AFC1F) <1290451982.20888.2.camel@maggie> Message-ID: <4CEAC095.7020706@lwfinger.net> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: =?UTF-8?B?TWljaGFlbCBCw7xzY2g=?= Cc: b43-dev , wireless On 11/22/2010 12:53 PM, Michael B?sch wrote: > On Mon, 2010-11-22 at 12:41 -0600, Larry Finger wrote: >> Under heavy load with multiple streams, I'm getting errors from my BCM4312 >> (14e4:4315) device as follows: >> >> b43-phy0 debug: TX-status contains invalid cookie: 0x0D4D >> b43-phy0 debug: Out of order TX status report on DMA ring 1. Expected 74, but got 76 >> b43-phy0 debug: Out of order TX status report on DMA ring 1. Expected 74, but got 78 >> (and continues). >> >> Clearly that cookie is garbage as it has a slot number of 0. Any suggestions on >> diagnostic information that I could dump to help debug this? > > I think that probably is a firmware or hardware bug. The affected > kernel code was not changed in years, as far as I know. Thanks. I'll see if I can figure out a way for the driver to recover more gracefully. In the meantime, I will be dumping the entire TX status struct to see if that helps in seeing what is wrong. Larry