[PATCH v3 3/5] ALSA: emu10k1: add optional debug printouts with DMA addresses

2018-02-13 Thread Maciej S. Szmigiero
When we get a IOMMU page fault for a emu10k1 device it is very hard to discover which of chip many DMA allocations triggered it (since on a IOMMU system the DMA address space is often very different from the CPU one). Let's add optional debug printouts providing this information. These debug

[PATCH v3 3/5] ALSA: emu10k1: add optional debug printouts with DMA addresses

2018-02-13 Thread Maciej S. Szmigiero
When we get a IOMMU page fault for a emu10k1 device it is very hard to discover which of chip many DMA allocations triggered it (since on a IOMMU system the DMA address space is often very different from the CPU one). Let's add optional debug printouts providing this information. These debug