On Mon, 2012-10-15 at 01:02 +0800, Fengguang Wu wrote: > Hi Shuah, > > FYI, your debug commit > > commit 224d4b5563b005836628b1c02ebe374684df118f > Author: Shuah Khan <[email protected]> > Date: Fri Oct 12 15:23:05 2012 +1100 > > dma-debug: new interfaces to debug dma mapping errors > > triggers the below warning. Hopefully you know better than me the real > issue and relevant developers to CC. >
This warning indicates that the driver failed to check dma mapping error on a buffer returned by dma_map_single() or dma_map_page() call. Looking at the the area where mapping is done, it appears it does call dma_mapping_error(). It does allocate several buffers in a loop, so it not obvious to me why the warning is showing up. I will follow-up on this to make sure it is not a false alarm, before I get the driver team involved. Thanks for reporting it. -- Shuah -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
