lkml.org 
[lkml]   [2016]   [Sep]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH v2] bcma: use of_dma_configure() to set initial dma mask
Date
On Monday, September 5, 2016 11:34:14 PM CEST Rafał Miłecki wrote:
> On 17 March 2016 at 10:39, Arnd Bergmann <arnd@arndb.de> wrote:
> > While fixing another bug, I noticed that bcma manually sets up
> > a dma_mask pointer for its child devices. We have a generic
> > helper for that now, which should be able to cope better with
> > any variations that might be needed to deal with cache coherency,
> > unusual DMA address offsets, iommus, or limited DMA masks, none
> > of which are currently handled here.
> >
> > This changes the core to use the of_dma_configure(), like
> > we do for platform devices that are probed directly from
> > DT.
> >
> > Signed-off-by: Arnd Bergmann <arnd@arndb.de>
>
> I applied this patch and tested on BCM47081 based device. I still got
> bgmac working which surely uses DMA.

Thanks!

> There is only 1 ARM wireless SoC
> using bcma (BCM47198) but its WiFi core isn't supported by b43.
>
> Any tips what else to test? SPI core/driver doesn't use DMA. Maybe
> NAND core does, but we don't use it.
>

If there is nothing else using this, then the patch won't cause
a regression ;-)

Arnd

\
 
 \ /
  Last update: 2016-09-17 09:58    [W:0.499 / U:0.648 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site