diff mbox

ARM: ux500: set coherent_dma_mask for dma40

Message ID 1371131763-6288-1-git-send-email-fabio.baltieri@linaro.org
State Accepted
Commit 0a429fd15ecb05d7d5fa8eb4adaff69c7a00984b
Headers show

Commit Message

Fabio Baltieri June 13, 2013, 1:56 p.m. UTC 
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 mbox

Patch

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,