linux-kernel - Re: [BISECTED REGRESSION] b43legacy broken on G4 PowerBook

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Message-ID: <034e6860-8fa8-0510-96c2-0cf6e6a04868@lwfinger.net>
Date:   Fri, 7 Jun 2019 13:50:42 -0500
From:   Larry Finger <Larry.Finger@...inger.net>
To:     Christoph Hellwig <hch@....de>
Cc:     Aaro Koskinen <aaro.koskinen@....fi>,
        Christian Zigotzky <chzigotzky@...osoft.de>,
        Michael Ellerman <mpe@...erman.id.au>,
        linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [BISECTED REGRESSION] b43legacy broken on G4 PowerBook

On 6/7/19 12:29 PM, Christoph Hellwig wrote:
> I don't think we should work around this in the driver, we need to fix
> it in the core.  I'm curious why my previous patch didn't work.  Can
> you throw in a few printks what failed?  I.e. did dma_direct_supported
> return false?  Did the actual allocation fail?

I agree that that patch should not be sent upstream. I posted it only so that 
anyone running into the problem would have a work around.

I will try to see why your patch failed.

Larry