diff options
Diffstat (limited to 'drivers/dma/cppi41.c')
| -rw-r--r-- | drivers/dma/cppi41.c | 7 |
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; |