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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2021-09-06 01:12:09 +0300
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2021-09-07 19:18:48 +0300
commitdd8b6a2cc92b58d12845b42b1f4742482647d859 (patch)
tree06bef12f22fa9865f27b38eb84d580fb84952475 /.clang-tidy
parent71dad75373ff9348181517909557b6b1dea9058e (diff)
cam: drm: Avoid importing the same dmabuf multiple times
When creating a DRM frame buffer, the dmabufs for the planes are imported as GEM objects. For multi-planar formats, all planes may use the same dmabuf, which results in multiple imports. This doesn't cause any issue at import time, as DRM detects this situation and returns the same GEM object. However, when destroying the frame buffer, the same GEM object ends up being closed multiple times, which generates an error. Fix this by avoiding multiple imports of the same dmabuf for the same frame buffer. While the issue may theoretically occur with identical dmabufs for different frame buffers, this is quite unlikely and is thus not addressed. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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