From: Rob Herring <rob.herring@xxxxxxxxxxx> Platform devices created by DT code don't initialize dma_mask pointer to anything. Set it to coherent_dma_mask by default if the architecture code has not set it. Signed-off-by: Rob Herring <rob.herring@xxxxxxxxxxx> --- I think this is at least part of what is needed to fix dma_mask issue raised by Stefano [1]. Things should work AFAICT with just this, but I suppose the xgmac driver needs to set the mask as well (not relying on the default), but some pointing the dma_mask to a valid value is needed first. Rob [1] http://www.mail-archive.com/linux-kernel@xxxxxxxxxxxxxxx/msg528236.html drivers/of/platform.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/of/platform.c b/drivers/of/platform.c index f6dcde2..fce088e 100644 --- a/drivers/of/platform.c +++ b/drivers/of/platform.c @@ -215,6 +215,8 @@ static struct platform_device *of_platform_device_create_pdata( dev->archdata.dma_mask = 0xffffffffUL; #endif dev->dev.coherent_dma_mask = DMA_BIT_MASK(32); + if (!dev->dev.dma_mask) + dev->dev.dma_mask = &dev->dev.coherent_dma_mask; dev->dev.bus = &platform_bus_type; dev->dev.platform_data = platform_data; -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
