dmaengine: zynqmp_dma: refine dma descriptor locking

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The descriptor lists are locked for the entire tasklet that completes
the descriptors. This is not necessary, because the lock actually only
protects the descriptor lists.

Make the spin lock more fine-grained and only protect functions that
actually operate on the descriptor lists. This decreases the time when
the lock is held.

Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Link: https://lore.kernel.org/r/20210826094742.1302009-7-m.tretter@pengutronix.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>

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Michael Tretter 2021-08-26 11:47:41 +02:00 • committed by Vinod Koul

parent 16ed0ef3e9

commit 193a750df5

1 changed files with 21 additions and 14 deletions

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drivers/dma/xilinx/zynqmp_dma.c

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