target/linux/layerscape/patches-5.4/806-dma-0017-MLK-20205-1-dmaengine-fsl-edma-v3-fix-NULL-pointer-d.patch

   1 From 0059c7ed6c11254f214a07357bbf87296cde446f Mon Sep 17 00:00:00 2001
   2 From: Robin Gong <yibin.gong@nxp.com>
   3 Date: Wed, 7 Nov 2018 22:19:07 +0800
   4 Subject: [PATCH] MLK-20205-1: dmaengine: fsl-edma-v3: fix NULL pointer
   5  dereference
   6
   7 Fix 'null pointer dereferences issue' reported by coverity(CID-1477441).
   8
   9 Signed-off-by: Robin Gong <yibin.gong@nxp.com>
  10 Reviewed-by: Anson Huang <Anson.Huang@nxp.com>
  11 (cherry picked from commit 5343c0018af0af2eb3bb90c5a75e765b851a2c12)
  12 ---
  13  drivers/dma/fsl-edma-v3.c | 2 +-
  14  1 file changed, 1 insertion(+), 1 deletion(-)
  15
  16 --- a/drivers/dma/fsl-edma-v3.c
  17 +++ b/drivers/dma/fsl-edma-v3.c
  18 @@ -419,7 +419,7 @@ static enum dma_status fsl_edma3_tx_stat
  19         if (fsl_chan->edesc && cookie == fsl_chan->edesc->vdesc.tx.cookie)
  20                 txstate->residue = fsl_edma3_desc_residue(fsl_chan, vdesc,
  21                                                                 true);
  22 -       else if (vdesc)
  23 +       else if (fsl_chan->edesc && vdesc)
  24                 txstate->residue = fsl_edma3_desc_residue(fsl_chan, vdesc,
  25                                                                 false);
  26         else