Commit fc737969 authored Oct 07, 2016 by Sinan Kaya Committed by Vinod Koul Oct 19, 2016

dmaengine: qcom_hidma: break completion processing on error



We try to consume as much successful transfers as possible. Now that we
support MSI interrupts, an error interrupt might be observed by another
processor while we are finishing the successful ones.

Try to abort successful processing if this is the case.

Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

parent d3eab504

drivers/dma/qcom/hidma_ll.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -291,6 +291,13 @@ static int hidma_handle_tre_completion(struct hidma_lldev *lldev)
		evre_write_off =
		readl_relaxed(lldev->evca + HIDMA_EVCA_WRITE_PTR_REG);
		num_completed++;

		/*
		* An error interrupt might have arrived while we are processing
		* the completed interrupt.
		*/
		if (!hidma_ll_isenabled(lldev))
		break;
		}

		if (num_completed) {

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