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Date: Thu, 13 Jun 2019 13:51:41 -0500 From: Larry Finger <Larry.Finger@...inger.net> To: Christoph Hellwig <hch@....de>, benh@...nel.crashing.org, paulus@...ba.org, mpe@...erman.id.au Cc: aaro.koskinen@....fi, linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] powerpc: enable a 30-bit ZONE_DMA for 32-bit pmac On 6/13/19 3:24 AM, Christoph Hellwig wrote: > With the strict dma mask checking introduced with the switch to > the generic DMA direct code common wifi chips on 32-bit powerbooks > stopped working. Add a 30-bit ZONE_DMA to the 32-bit pmac builds > to allow them to reliably allocate dma coherent memory. > > Fixes: 65a21b71f948 ("powerpc/dma: remove dma_nommu_dma_supported") > Reported-by: Aaro Koskinen <aaro.koskinen@....fi> > Signed-off-by: Christoph Hellwig <hch@....de> As expected, it works. The patch needs Cc: Stable <stable*vger.kernel.org> # v5.1+ Tested-by: Larry Finger <Larry.Finger@...inger.net> Acked-by: Larry Finger <Larry.Finger@...inger.net> Thanks for the help, and the patience with my debugging problems with u64 variables. Larry
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