[lkml]   [2010]   [Aug]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: 2.6.35-stable/ppc64/p7: Badness at lib/dma-debug.c:902, Call Trace & Instruction Dump during boot
    On Wed, 4 Aug 2010 15:16:34 +0200
    "Roedel, Joerg" <> wrote:

    > On Mon, Aug 02, 2010 at 07:55:03AM -0400, FUJITA Tomonori wrote:
    > > I guess that this driver does a partial sync with
    > > dma_sync_single_for_* API. dma-debug can't handle it properly. It's
    > > likely that this is a false warning.
    > If this turns out to be true it is not trivial to fix. I prepare a patch
    > to test for you.

    I've not looked at the details of this driver, but there are drivers
    that do such. So dma-debug needs to be fixed anyway; you can't assume
    that a DMA address that dma_map_single returned is passed to
    dma_sync_single_for API.

     \ /
      Last update: 2010-08-04 16:21    [W:0.018 / U:10.056 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site