DMA: Freescale: add fsl_dma_free_descriptor() to reduce code duplication

There are several places where descriptors are freed using identical code.
This patch puts this code into a function to reduce code duplication.

Signed-off-by: Hongbo Zhang <hongbo.zhang@freescale.com>
Signed-off-by: Qiang Liu <qiang.liu@freescale.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index b71cc04e66ca9c02012bc7cf474666fc3823f30c..adc266e6d5c9fef3b18c45fbbadc1560b327b8a5 100644 (file)
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -417,6 +417,19 @@ static dma_cookie_t fsl_dma_tx_submit(struct dma_async_tx_descriptor *tx)
        return cookie;
 }
 
+/**
+ * fsl_dma_free_descriptor - Free descriptor from channel's DMA pool.
+ * @chan : Freescale DMA channel
+ * @desc: descriptor to be freed
+ */
+static void fsl_dma_free_descriptor(struct fsldma_chan *chan,
+               struct fsl_desc_sw *desc)
+{
+       list_del(&desc->node);
+       chan_dbg(chan, "LD %p free\n", desc);
+       dma_pool_free(chan->desc_pool, desc, desc->async_tx.phys);
+}
+
 /**
  * fsl_dma_alloc_descriptor - Allocate descriptor from channel's DMA pool.
  * @chan : Freescale DMA channel
@@ -489,11 +502,8 @@ static void fsldma_free_desc_list(struct fsldma_chan *chan,
 {
        struct fsl_desc_sw *desc, *_desc;
 
-       list_for_each_entry_safe(desc, _desc, list, node) {
-               list_del(&desc->node);
-               chan_dbg(chan, "LD %p free\n", desc);
-               dma_pool_free(chan->desc_pool, desc, desc->async_tx.phys);
-       }
+       list_for_each_entry_safe(desc, _desc, list, node)
+               fsl_dma_free_descriptor(chan, desc);
 }
 
 static void fsldma_free_desc_list_reverse(struct fsldma_chan *chan,
@@ -501,11 +511,8 @@ static void fsldma_free_desc_list_reverse(struct fsldma_chan *chan,
 {
        struct fsl_desc_sw *desc, *_desc;
 
-       list_for_each_entry_safe_reverse(desc, _desc, list, node) {
-               list_del(&desc->node);
-               chan_dbg(chan, "LD %p free\n", desc);
-               dma_pool_free(chan->desc_pool, desc, desc->async_tx.phys);
-       }
+       list_for_each_entry_safe_reverse(desc, _desc, list, node)
+               fsl_dma_free_descriptor(chan, desc);
 }
 
 /**