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linux/drivers/dma/xilinx
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Laurent Pinchart 9f007e7b66 dmaengine: xilinx: dpdma: Limit descriptor IDs to 16 bits 
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>
History 2021-05-31 09:37:17 +05:30
..
Makefile dmaengine: xilinx: dpdma: Add the Xilinx DisplayPort DMA engine driver 2020-07-17 11:37:59 +05:30
xilinx_dma.c dmaengine: xilinx: Introduce synchronize() callback 2021-03-16 16:15:32 +05:30
xilinx_dpdma.c dmaengine: xilinx: dpdma: Limit descriptor IDs to 16 bits 2021-05-31 09:37:17 +05:30
zynqmp_dma.c dmaengine: zynqmp_dma: Fix PM reference leak in zynqmp_dma_alloc_chan_resourc() 2021-05-31 09:33:09 +05:30