tree a2f5fe47fdecf0c5edbaa8a64c3e3c6cad8bd661
parent 0c744ea4f77d72b3dcebb7a8f2684633ec79be88
author Matthew Wilcox <mawilcox@microsoft.com> 1481821071 -0800
committer Vinod Koul <vinod.koul@intel.com> 1483330592 +0530

dmaengine: Convert ID allocation to an IDA

dmaengine currently uses an IDR to allocate DMA IDs, but it only needs
to know whether IDs are in use or not; the ID to pointer functionality
of the IDR is unused.  That means it can use the more space-efficient IDA.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>