dmaengine: dw-axi-dmac: Only start idle channels #6464
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Attempting to start a non-idle channel causes an error message to be logged, and is inefficient. Test for emptiness of the desc_issued list before doing so. Signed-off-by: Phil Elwell <[email protected]>
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Attempting to start a non-idle channel causes an error message to be logged, and is inefficient. Test for emptiness of the desc_issued list before doing so.