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(parent: 9fd86cd) | patch
dmaengine: xilinx: dpdma: Fix race condition in done IRQ
authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Sun, 7 Mar 2021 04:06:29 +0000 (06:06 +0200)
committerVinod Koul <vkoul@kernel.org>
Tue, 16 Mar 2021 10:45:06 +0000 (16:15 +0530)
commit1fa0b8bfc4ca1d54ced3dc6c0c432024c7d009e6
tree5a6912f8073d5ec62e6d076bfb87400455ca5bd2tree | snapshot
parent9fd86cd1559fab97460fcd1302d59d1e646320d2commit | diff
dmaengine: xilinx: dpdma: Fix race condition in done IRQ

The active descriptor pointer is accessed from different contexts,
including different interrupt handlers, and its access must be protected
by the channel's lock. This wasn't done in the done IRQ handler. Fix it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/20210307040629.29308-3-laurent.pinchart@ideasonboard.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
drivers/dma/xilinx/xilinx_dpdma.c diff | blob | history
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