From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org,
Christian Zigotzky <chzigotzky@xenosoft.de>,
linuxppc-dev@lists.ozlabs.org, Christoph Hellwig <hch@lst.de>,
Larry Finger <Larry.Finger@lwfinger.net>
Subject: Re: [BISECTED REGRESSION] b43legacy broken on G4 PowerBook
Date: Thu, 06 Jun 2019 20:57:49 +1000 [thread overview]
Message-ID: <f8df19ffe5b75537045119037459ae9ad4a1de39.camel@kernel.crashing.org> (raw)
In-Reply-To: <d87ac9a7faac0d5522cb496d74afc586410fed9c.camel@kernel.crashing.org>
On Thu, 2019-06-06 at 20:56 +1000, Benjamin Herrenschmidt wrote:
> On Thu, 2019-06-06 at 12:31 +0300, Aaro Koskinen wrote:
> > Hi,
> >
> > On Thu, Jun 06, 2019 at 10:54:51AM +1000, Benjamin Herrenschmidt
> > wrote:
> > > On Thu, 2019-06-06 at 01:50 +0300, Aaro Koskinen wrote:
> > > > Hi,
> > > >
> > > > When upgrading from v5.0 -> v5.1 on G4 PowerBook, I noticed WLAN
> > > > does
> > > > not work anymore:
> > > >
> > > > [ 42.004303] b43legacy-phy0: Loading firmware version 0x127,
> > > > patch level 14 (2005-04-18 02:36:27)
> > > > [ 42.184837] b43legacy-phy0 debug: Chip initialized
> > > > [ 42.184873] b43legacy-phy0 ERROR: The machine/kernel does not
> > > > support the required 30-bit DMA mask
> > > >
> > > > The same happens with the current mainline.
> > >
> > > How much RAM do you have ?
> >
> > The system has 1129 MB RAM. Booting with mem=1G makes it work.
>
> Wow... that's an odd amount. One thing we could possibly do is add code
> to limit the amount of RAM when we detect that device....
Sent too quickly... I mean that *or* force swiotlb at 30-bits on those systems based
on detecting the presence of that device in the device-tree.
Cheers,
Ben.
next prev parent reply other threads:[~2019-06-06 10:59 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-05 22:50 [BISECTED REGRESSION] b43legacy broken on G4 PowerBook Aaro Koskinen
2019-06-06 0:54 ` Benjamin Herrenschmidt
2019-06-06 9:31 ` Aaro Koskinen
2019-06-06 10:56 ` Benjamin Herrenschmidt
2019-06-06 10:57 ` Benjamin Herrenschmidt [this message]
2019-06-06 11:43 ` Christoph Hellwig
2019-06-06 19:26 ` Larry Finger
2019-06-06 20:11 ` Larry Finger
2019-06-06 3:06 ` Larry Finger
2019-06-06 6:40 ` Christoph Hellwig
2019-06-07 17:25 ` Larry Finger
2019-06-07 17:29 ` Christoph Hellwig
2019-06-07 18:50 ` Larry Finger
2019-06-08 21:52 ` Larry Finger
2019-06-10 8:18 ` Christoph Hellwig
2019-06-10 16:09 ` Larry Finger
2019-06-11 6:05 ` Christoph Hellwig
2019-06-11 22:20 ` Larry Finger
2019-06-11 22:46 ` Aaro Koskinen
2019-06-12 1:57 ` Larry Finger
2019-06-11 22:46 ` Benjamin Herrenschmidt
2019-06-12 1:52 ` Larry Finger
2019-06-12 3:32 ` Benjamin Herrenschmidt
2019-06-12 6:55 ` Christoph Hellwig
2019-06-12 19:41 ` Larry Finger
2019-06-12 21:59 ` Benjamin Herrenschmidt
2019-06-13 7:29 ` Christoph Hellwig
2019-06-11 17:48 ` Andreas Schwab
2019-06-08 4:21 ` Benjamin Herrenschmidt
2019-06-08 7:23 ` Christoph Hellwig
2019-06-10 18:44 ` Larry Finger
2019-06-11 5:56 ` Benjamin Herrenschmidt
2019-06-11 6:08 ` Christoph Hellwig
2019-06-11 6:58 ` Benjamin Herrenschmidt
2019-06-11 6:59 ` Benjamin Herrenschmidt
2019-06-11 7:54 ` Christoph Hellwig
2019-06-11 9:04 ` Benjamin Herrenschmidt
2019-06-11 7:53 ` Christoph Hellwig
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