b44 driver causes panic when using swiotlb

[Chuck Ebbert]

The b44 driver is triggering this panic in swiotlb_map_page():

        if (!dma_capable(dev, dev_addr, size))
                panic("map_single: bounce buffer is not DMA'ble");

The kernel log says the bounce buffers are at 0xdb400000, but b44 can
only do DMA to the first 1GB of memory:

 PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
 Placing 64MB software IO TLB between ffff8800db400000 - ffff8800df400000
 software IO TLB at phys 0xdb400000 - 0xdf400000
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/