diff options
| -rw-r--r-- | drivers/net/cpsw.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/net/cpsw.c b/drivers/net/cpsw.c index 52adf50205..ec3263d4aa 100644 --- a/drivers/net/cpsw.c +++ b/drivers/net/cpsw.c @@ -741,8 +741,13 @@ static int cpdma_process(struct cpsw_priv *priv, struct cpdma_chan *chan, if (buffer) *buffer = (void *)readl(&desc->sw_buffer); - if (status & CPDMA_DESC_OWNER) + if (status & CPDMA_DESC_OWNER) { + if (readl(chan->hdp) == 0) { + if (readl(&desc->hw_mode) & CPDMA_DESC_OWNER) + writel((u32)desc, chan->hdp); + } return -EBUSY; + } chan->head = (void *)readl(&desc->hw_next); |