dmaengine: xilinx_dma: Check for channel idle state before submitting dma descriptor

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Add variable for checking channel idle state to ensure that dma
descriptor is not submitted when dmaengine is in progress.

This will avoid the polling for a bit in the status register to know
dma state in the driver hot path.

Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

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Kedareswara rao Appana 2017-12-07 10:51:02 +05:30 • committed by Vinod Koul

parent 5ba080aada

commit 21e02a3e05

1 changed files with 22 additions and 38 deletions

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drivers/dma/xilinx/xilinx_dma.c

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