On 04/09/12 15:37, Konrad Rzeszutek Wilk wrote: > On Tue, Sep 04, 2012 at 03:07:42PM +0100, Stefano Panella wrote: >> >> So if hwdev->coherent_dma_mask is set to 0xffffffffffffffff our dma_mask will >> be u64 set to 0xffffffffffffffff even if we set it to DMA_BIT_MASK(32) >> previously. > > That is what I was missing. Let me include that in the git commit and also > put this patch on the stable tree.
Note that this appears to be a work around for a bug in the sound system or Intel HDA device driver which is incorrectly truncating a dma_addr_t to a u32. So by ensuring a DMA_BIT_MASK(32) when the dma_addr_t is truncated it still works. David -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
