From bfc1d5bf261df81155935aac10b721f4d5a70849 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Thu, 11 Jun 2020 14:17:40 +0200 Subject: [PATCH] dmaengine: fsl-edma: Add lockdep assert for exported function Add lockdep assert for an exported function expected to be called under spin lock. Since this function is called in different modules, the lockdep assert will be self-documenting note about need for locking. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Robin Gong Link: https://lore.kernel.org/r/1591877861-28156-1-git-send-email-krzk@kernel.org Signed-off-by: Vinod Koul --- drivers/dma/fsl-edma-common.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/dma/fsl-edma-common.c b/drivers/dma/fsl-edma-common.c index 5697c3622699..4550818cca4a 100644 --- a/drivers/dma/fsl-edma-common.c +++ b/drivers/dma/fsl-edma-common.c @@ -589,6 +589,8 @@ void fsl_edma_xfer_desc(struct fsl_edma_chan *fsl_chan) { struct virt_dma_desc *vdesc; + lockdep_assert_held(&fsl_chan->vchan.lock); + vdesc = vchan_next_desc(&fsl_chan->vchan); if (!vdesc) return;