dmaengine: at_hdmac: remove unsuded atc_cleanup_descriptors()

Since patch 7c407d3e54dcc0c79119553c8d5ef176c1d5bc3a (DMA: AT91:
Get residual bytes in dma buffer), the function
atc_cleanup_descriptors() is not used anymore. We remove it to prevent
warnings.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>

diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index b7050a4..1ee3ed1 100644 (file)
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -417,37 +417,6 @@ static void atc_complete_all(struct at_dma_chan *atchan)
 }
 
 /**
- * atc_cleanup_descriptors - cleanup up finished descriptors in active_list
- * @atchan: channel to be cleaned up
- *
- * Called with atchan->lock held and bh disabled
- */
-static void atc_cleanup_descriptors(struct at_dma_chan *atchan)
-{
-       struct at_desc  *desc, *_desc;
-       struct at_desc  *child;
-
-       dev_vdbg(chan2dev(&atchan->chan_common), "cleanup descriptors\n");
-
-       list_for_each_entry_safe(desc, _desc, &atchan->active_list, desc_node) {
-               if (!(desc->lli.ctrla & ATC_DONE))
-                       /* This one is currently in progress */
-                       return;
-
-               list_for_each_entry(child, &desc->tx_list, desc_node)
-                       if (!(child->lli.ctrla & ATC_DONE))
-                               /* Currently in progress */
-                               return;
-
-               /*
-                * No descriptors so far seem to be in progress, i.e.
-                * this chain must be done.
-                */
-               atc_chain_complete(atchan, desc);
-       }
-}
-
-/**
  * atc_advance_work - at the end of a transaction, move forward
  * @atchan: channel where the transaction ended
  *