[PATCH V2 1/3] scsi: mptxsas: try 64 bit DMA when 32 bit DMA fails
timur at codeaurora.org
Tue Nov 10 13:59:18 PST 2015
On 11/10/2015 03:54 PM, Arnd Bergmann wrote:
>> In our drivers for 32-bit devices, we have to explicitly set the DMA
>> mask to 32-bits in order to get any DMA working.
> Do you mean PCI devices or platform devices?
> Maybe the parent bus is lacking a dma-ranges property?
All of this applies only on device-tree platforms. Sinan and I are
working on an ACPI server platform. So we never call
of_dma_configure(), and we don't have a dma-ranges property.
Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the
Code Aurora Forum, a Linux Foundation Collaborative Project.
More information about the linux-arm-kernel