dmaengine: xilinx: dpdma: Print debug message when losing vsync race

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The hardware retrigger is inherently racy with the vsync interrupt. This
isn't an issue as the hardware provides a way to detect a race loss and
handle it correctly. When debugging issues related to this, it's useful
to get a notification of the race loss. Add a debug message to do so.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Jianqiang Chen <jianqiang.chen@xilinx.com>
Reviewed-by: Jianqiang Chen <jianqiang.chen@xilinx.com>
Link: https://lore.kernel.org/r/20210520152420.23986-4-laurent.pinchart@ideasonboard.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

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Laurent Pinchart 2021-05-20 18:24:19 +03:00 • committed by Vinod Koul

parent 3021190192

commit 4fbf41ce57

1 changed files with 5 additions and 1 deletions

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drivers/dma/xilinx/xilinx_dpdma.c

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