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| author | Ira Snyder <iws@ovro.caltech.edu> | 2011-03-03 07:54:59 +0000 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2011-03-11 17:52:37 -0800 |
| commit | 9c4d1e7bdeb1ed4dc0c3341d40662a6fbc5f2dc2 (patch) | |
| tree | 1139343b541dea7344c4436065ea5960eccad844 /init/main.c | |
| parent | f04cd40701deace2efb9edd7120e59366bda2118 (diff) | |
| download | op-kernel-dev-9c4d1e7bdeb1ed4dc0c3341d40662a6fbc5f2dc2.zip op-kernel-dev-9c4d1e7bdeb1ed4dc0c3341d40662a6fbc5f2dc2.tar.gz | |
fsldma: support async_tx dependencies and automatic unmapping
Previous to this patch, the dma_run_dependencies() function has been
called while holding desc_lock. This function can call tx_submit() for
other descriptors, which may try to re-grab the lock. Avoid this by
moving the descriptors to be cleaned up to a temporary list, and
dropping the lock before cleanup.
At the same time, add support for automatic unmapping of src and dst
buffers, as offered by the DMAEngine API.
Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'init/main.c')
0 files changed, 0 insertions, 0 deletions
