dmaengine: at_hdmac: trivial add precision to unmapping comment

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index 6eea888..73a470b 100644 (file)
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -253,7 +253,7 @@ atc_chain_complete(struct at_dma_chan *atchan, struct at_desc *desc)
        /* move myself to free_list */
        list_move(&desc->desc_node, &atchan->free_list);
 
-       /* unmap dma addresses */
+       /* unmap dma addresses (not on slave channels) */
        if (!atchan->chan_common.private) {
                struct device *parent = chan2parent(&atchan->chan_common);
                if (!(txd->flags & DMA_COMPL_SKIP_DEST_UNMAP)) {