Messages in this thread Patch in this message | | | From | Fabio Baltieri <> | Subject | [PATCH] ARM: ux500: set coherent_dma_mask for dma40 | Date | Thu, 13 Jun 2013 15:56:03 +0200 |
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Set coherent_dma_mask to DMA_BIT_MASK(32) for dma40 platform_device, as without this DMA allocations were failing with the error:
dma40 dma40.0: coherent DMA mask is unset
when booting without device-tree.
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org> ---
Hi Linus, Lee,
I found this while removing the last hack I was keeping in my ASoC tree. I originally thought that I had to set this on the driver's pdata, but it turns out it's needed on the DMA controller one instead.
When booting with device-tree enabled the mask seems to be set automatically.
Would you consider applying this with the other dma40 patches?
Thanks, Fabio
arch/arm/mach-ux500/devices-db8500.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm/mach-ux500/devices-db8500.c b/arch/arm/mach-ux500/devices-db8500.c index e21ffd8..fa8f7a5 100644 --- a/arch/arm/mach-ux500/devices-db8500.c +++ b/arch/arm/mach-ux500/devices-db8500.c @@ -49,6 +49,7 @@ struct stedma40_platform_data dma40_plat_data = { struct platform_device u8500_dma40_device = { .dev = { .platform_data = &dma40_plat_data, + .coherent_dma_mask = DMA_BIT_MASK(32), }, .name = "dma40", .id = 0, -- 1.8.2
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