ioat1: move descriptor allocation from submit to prep

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The async_tx api assumes that after a successful ->prep a subsequent
->submit will not fail due to a lack of resources.

This also fixes a bug in the allocation failure case.  Previously the
descriptors allocated prior to the allocation failure would not be
returned to the free list.

Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

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This commit is contained in:

Dan Williams 2009-07-28 14:44:04 -07:00

parent c7984f4e4e

commit a0587bcf3e

1 changed files with 65 additions and 89 deletions

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152

drivers/dma/ioat/dma.c

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