Messages in this thread | | | Date | Fri, 13 Apr 2012 17:11:34 +0200 (CEST) | From | Guennadi Liakhovetski <> | Subject | Re: [PATCH] ARM: i.mx35 increase dma consistent region size |
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On Fri, 13 Apr 2012, Sascha Hauer wrote:
> On Wed, Apr 11, 2012 at 09:01:14PM +0300, Alex Gershgorin wrote: > > The default size of the consistent DMA region is 2MB > > without this patch, attempt to allocate more than 2MB > > is causing allocation failure > > > > Signed-off-by: Alex Gershgorin <alexg@meprolight.com> > > --- > > arch/arm/mach-imx/mm-imx3.c | 1 + > > 1 files changed, 1 insertions(+), 0 deletions(-) > > > > diff --git a/arch/arm/mach-imx/mm-imx3.c b/arch/arm/mach-imx/mm-imx3.c > > index 7412738..a2c0c7d 100644 > > --- a/arch/arm/mach-imx/mm-imx3.c > > +++ b/arch/arm/mach-imx/mm-imx3.c > > @@ -201,6 +201,7 @@ static struct map_desc mx35_io_desc[] __initdata = { > > void __init mx35_map_io(void) > > { > > iotable_init(mx35_io_desc, ARRAY_SIZE(mx35_io_desc)); > > + init_consistent_dma_size(SZ_8M); > > I don't know what to think about this. You probably have a board with > camera support and thus need bigger buffers, right? Nevertheless this > patch affects all i.MX35 users, even the ones without camera support. > > Another possibility would be to make this board specific.
Isn't this what other (including i.MX3*) boards use arm_memblock_steal() for?
Thanks Guennadi --- Guennadi Liakhovetski, Ph.D. Freelance Open-Source Software Developer http://www.open-technology.de/
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