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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2021-05-20 18:24:19 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2021-05-31 09:37:39 +0530 |
| commit | 4fbf41ce573556a6dc4e684f0d92700cdc883ad3 (patch) | |
| tree | f8f61fde9b1432d713c32ac42ffa268bbe95935c /include/linux/dmaengine.h | |
| parent | 30211901927a2a504adae2a75f9863962d2d06b0 (diff) | |
| download | lwn-4fbf41ce573556a6dc4e684f0d92700cdc883ad3.tar.gz lwn-4fbf41ce573556a6dc4e684f0d92700cdc883ad3.zip | |
dmaengine: xilinx: dpdma: Print debug message when losing vsync race
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>
Diffstat (limited to 'include/linux/dmaengine.h')
0 files changed, 0 insertions, 0 deletions