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path: root/drivers/dma/cppi41.c
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Diffstat (limited to 'drivers/dma/cppi41.c')
-rw-r--r--drivers/dma/cppi41.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/dma/cppi41.c b/drivers/dma/cppi41.c
index c18aebf7d5a..d028f36ae65 100644
--- a/drivers/dma/cppi41.c
+++ b/drivers/dma/cppi41.c
@@ -620,12 +620,15 @@ static int cppi41_stop_chan(struct dma_chan *chan)
u32 desc_phys;
int ret;
+ desc_phys = lower_32_bits(c->desc_phys);
+ desc_num = (desc_phys - cdd->descs_phys) / sizeof(struct cppi41_desc);
+ if (!cdd->chan_busy[desc_num])
+ return 0;
+
ret = cppi41_tear_down_chan(c);
if (ret)
return ret;
- desc_phys = lower_32_bits(c->desc_phys);
- desc_num = (desc_phys - cdd->descs_phys) / sizeof(struct cppi41_desc);
WARN_ON(!cdd->chan_busy[desc_num]);
cdd->chan_busy[desc_num] = NULL;