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While the descriptor ID is stored in a 32-bit field in the hardware descriptor, only 16 bits are used by the hardware and are reported through the XILINX_DPDMA_CH_DESC_ID register. Failure to handle the wrap-around results in a descriptor ID mismatch after 65536 frames. Fix it. 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/20210520152420.23986-5-laurent.pinchart@ideasonboard.com Signed-off-by: Vinod Koul <vkoul@kernel.org> |
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| .. | ||
| Makefile | ||
| xilinx_dma.c | ||
| xilinx_dpdma.c | ||
| zynqmp_dma.c | ||