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 <[email protected]> --- drivers/dma/qcom/hidma_ll.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/dma/qcom/hidma_ll.c b/drivers/dma/qcom/hidma_ll.c index 62cdd42..999abda 100644 --- a/drivers/dma/qcom/hidma_ll.c +++ b/drivers/dma/qcom/hidma_ll.c @@ -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) { -- 1.9.1
