forked from Minki/linux
95475e5711
We currently walk the parent chain when waiting for a given tx to complete however this walk may race with the driver cleanup routine. The routines in async_raid6_recov.c may fall back to the synchronous path at any point so we need to be prepared to call async_tx_quiesce() (which calls dma_wait_for_async_tx). To remove the ->parent walk we guarantee that every time a dependency is attached ->issue_pending() is invoked, then we can simply poll the initial descriptor until completion. This also allows for a lighter weight 'issue pending' implementation as there is no longer a requirement to iterate through all the channels' ->issue_pending() routines as long as operations have been submitted in an ordered chain. async_tx_issue_pending() is added for this case. Signed-off-by: Dan Williams <dan.j.williams@intel.com> |
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| .. | ||
| ipu | ||
| dmaengine.c | ||
| dmatest.c | ||
| dw_dmac_regs.h | ||
| dw_dmac.c | ||
| fsldma.c | ||
| fsldma.h | ||
| ioat_dca.c | ||
| ioat_dma.c | ||
| ioat.c | ||
| ioatdma_hw.h | ||
| ioatdma_registers.h | ||
| ioatdma.h | ||
| iop-adma.c | ||
| iovlock.c | ||
| Kconfig | ||
| Makefile | ||
| mv_xor.c | ||
| mv_xor.h | ||