Kedareswara rao Appana 23059408b6 dmaengine: xilinx_dma: Fix race condition in the driver for multiple descriptor scenario ... As per axi dmaengine spec the software must not move the tail pointer to a location that has not been updated (next descriptor field of the h/w descriptor should always point to a valid address). When user submits multiple descriptors on the recv side, with the current driver flow the last buffer descriptor next descriptor field points to a invalid location, resulting the invalid data or errors from the axidma dmaengine. This patch fixes this issue by creating a buffer descritpor chain during channel allocation itself and use those buffer descriptors for the subsequent dma operations. Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>		2017-12-18 10:44:09 +05:30
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Makefile	dmaengine: Add Xilinx zynqmp dma engine driver support	2016-07-08 11:25:34 +05:30
xilinx_dma.c	dmaengine: xilinx_dma: Fix race condition in the driver for multiple descriptor scenario	2017-12-18 10:44:09 +05:30
zynqmp_dma.c	dmaengine: zynqmp_dma: Fix race condition in the probe	2017-12-18 09:37:06 +05:30