[prev in list] [next in list] [prev in thread] [next in thread] 

List:       linux-kernel
Subject:    b44 driver causes panic when using swiotlb
From:       Chuck Ebbert <cebbert () redhat ! com>
Date:       2011-01-31 15:54:12
Message-ID: 20110131105412.7252a09c () katamari
[Download RAW message or body]

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@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/
[prev in list] [next in list] [prev in thread] [next in thread] 

Configure | About | News | Add a list | Sponsored by KoreLogic