From 01b66a7521274c1f208010db49af2a3d8e274400 Mon Sep 17 00:00:00 2001 From: Dmitry Osipenko Date: Sun, 9 Feb 2020 19:33:56 +0300 Subject: dmaengine: tegra-apb: Improve error message about DMA underflow Technically it is possible that DMA could be misconfigured in a way that cyclic DMA transfer is processed slower than it takes to complete the cycle and in this case the DMA is getting aborted with a not very informative message about the problem, let's improve it. Suggested-by: Jon Hunter Signed-off-by: Dmitry Osipenko Acked-by: Jon Hunter Link: https://lore.kernel.org/r/20200209163356.6439-20-digetx@gmail.com Signed-off-by: Vinod Koul --- drivers/dma/tegra20-apb-dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/dma/tegra20-apb-dma.c') diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c index 3265eb8e5d91..f1ff836abeaf 100644 --- a/drivers/dma/tegra20-apb-dma.c +++ b/drivers/dma/tegra20-apb-dma.c @@ -566,7 +566,7 @@ static bool handle_continuous_head_request(struct tegra_dma_channel *tdc, if (!hsgreq->configured) { tegra_dma_stop(tdc); pm_runtime_put(tdc->tdma->dev); - dev_err(tdc2dev(tdc), "Error in DMA transfer, aborting DMA\n"); + dev_err(tdc2dev(tdc), "DMA transfer underflow, aborting DMA\n"); tegra_dma_abort_all(tdc); return false; } -- cgit v1.2.3