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(parent: d4864cd) | 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)
commite6e04823c1f9f1ee1b0baf2cab35300ed19a7b78
tree5a6912f8073d5ec62e6d076bfb87400455ca5bd2tree | snapshot
parentd4864cdc33e4199c9801987f14ba4d7e6b1e966ecommit | 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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