1 files changed, 8 insertions, 6 deletions

diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
index 734a4eb84d65..9f02e794b12b 100644
--- a/drivers/dma/mxs-dma.c
+++ b/drivers/dma/mxs-dma.c
@@ -101,7 +101,8 @@ struct mxs_dma_ccw {
         u32             pio_words[MXS_PIO_WORDS];
 };
 
-#define NUM_CCW (int)(PAGE_SIZE / sizeof(struct mxs_dma_ccw))
+#define CCW_BLOCK_SIZE  (4 * PAGE_SIZE)
+#define NUM_CCW (int)(CCW_BLOCK_SIZE / sizeof(struct mxs_dma_ccw))
 
 struct mxs_dma_chan {
         struct mxs_dma_engine           *mxs_dma;
@@ -354,14 +355,15 @@ static int mxs_dma_alloc_chan_resources(struct dma_chan *chan)
 
         mxs_chan->chan_irq = data->chan_irq;
 
-        mxs_chan->ccw = dma_alloc_coherent(mxs_dma->dma_device.dev, PAGE_SIZE,
-                                &mxs_chan->ccw_phys, GFP_KERNEL);
+        mxs_chan->ccw = dma_alloc_coherent(mxs_dma->dma_device.dev,
+                                CCW_BLOCK_SIZE, &mxs_chan->ccw_phys,
+                                GFP_KERNEL);
         if (!mxs_chan->ccw) {
                 ret = -ENOMEM;
                 goto err_alloc;
         }
 
-        memset(mxs_chan->ccw, 0, PAGE_SIZE);
+        memset(mxs_chan->ccw, 0, CCW_BLOCK_SIZE);
 
         if (mxs_chan->chan_irq != NO_IRQ) {
                 ret = request_irq(mxs_chan->chan_irq, mxs_dma_int_handler,
@@ -387,7 +389,7 @@ static int mxs_dma_alloc_chan_resources(struct dma_chan *chan)
 err_clk:
         free_irq(mxs_chan->chan_irq, mxs_dma);
 err_irq:
-        dma_free_coherent(mxs_dma->dma_device.dev, PAGE_SIZE,
+        dma_free_coherent(mxs_dma->dma_device.dev, CCW_BLOCK_SIZE,
                         mxs_chan->ccw, mxs_chan->ccw_phys);
 err_alloc:
         return ret;
@@ -402,7 +404,7 @@ static void mxs_dma_free_chan_resources(struct dma_chan *chan)
 
         free_irq(mxs_chan->chan_irq, mxs_dma);
 
-        dma_free_coherent(mxs_dma->dma_device.dev, PAGE_SIZE,
+        dma_free_coherent(mxs_dma->dma_device.dev, CCW_BLOCK_SIZE,
                         mxs_chan->ccw, mxs_chan->ccw_phys);
 
         clk_disable_unprepare(mxs_dma->clk);