1 files changed, 0 insertions, 33 deletions
diff --git a/target/linux/layerscape/patches-5.4/806-dma-0016-MLK-19931-1-dmaengine-fsl-edma-v3-fix-potential-kern.patch b/target/linux/layerscape/patches-5.4/806-dma-0016-MLK-19931-1-dmaengine-fsl-edma-v3-fix-potential-kern.patch
deleted file mode 100644
index 28a59d4db2..0000000000
--- a/target/linux/layerscape/patches-5.4/806-dma-0016-MLK-19931-1-dmaengine-fsl-edma-v3-fix-potential-kern.patch
+++ /dev/null
@@ -1,33 +0,0 @@
-From 4967ec844a52498af050b1176fedeca37aca111e Mon Sep 17 00:00:00 2001
-From: Robin Gong <yibin.gong@nxp.com>
-Date: Tue, 16 Oct 2018 01:06:29 +0800
-Subject: [PATCH] MLK-19931-1: dmaengine: fsl-edma-v3: fix potential kernel
- crash in cyclic
-
-  There is one potential race condition in virt-dma framework as below:
-terminate dma channel after the last dma done interrupt, but before
-vchan_complete tasklet scheduled, thus the free-ed 'vd' (free in
-fsl_edma3_terminate_all) maybe still be touched in vchan_complete()
-which cause NULL pointer crash.
-  Kernel community noticed this issue and fix it at virt-dma level:
-https://patchwork.kernel.org/patch/10057791/. To avoid backport too
-much patches, set 'vc->cyclic = NULL' in terminate dma channel
-interfaces to fix such issue easily.
-
-Signed-off-by: Robin Gong <yibin.gong@nxp.com>
-Acked-by: Fugang Duan <fugang.duan@nxp.com>
-(cherry picked from commit 18c9083826400a2ef731496391a0b5e71d461a5f)
----
- drivers/dma/fsl-edma-v3.c | 1 +
- 1 file changed, 1 insertion(+)
-
---- a/drivers/dma/fsl-edma-v3.c
-+++ b/drivers/dma/fsl-edma-v3.c
-@@ -285,6 +285,7 @@ static int fsl_edma3_terminate_all(struc
- 	fsl_chan->edesc = NULL;
- 	fsl_chan->idle = true;
- 	fsl_chan->used = false;
-+	fsl_chan->vchan.cyclic = NULL;
- 	vchan_get_all_descriptors(&fsl_chan->vchan, &head);
- 	spin_unlock_irqrestore(&fsl_chan->vchan.lock, flags);
- 	vchan_dma_desc_free_list(&fsl_chan->vchan, &head);