dma: mxs-dma: convert to clk_prepare/clk_unprepare

The patch converts mxs-dma driver to clk_prepare/clk_unprepare by
using helper functions clk_prepare_enable/clk_disable_unprepare.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Vinod Koul <vinod.koul@linux.intel.com>

diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
index b4588bdd98bb0f0f7dbd3ea5c570f760550ef14d..fc903c0ed234eae754d06911b94f73f463a3b7eb 100644 (file)
--- a/drivers/dma/mxs-dma.c
+++ b/drivers/dma/mxs-dma.c
@@ -334,7 +334,7 @@ static int mxs_dma_alloc_chan_resources(struct dma_chan *chan)
                        goto err_irq;
        }
 
-       ret = clk_enable(mxs_dma->clk);
+       ret = clk_prepare_enable(mxs_dma->clk);
        if (ret)
                goto err_clk;
 
@@ -372,7 +372,7 @@ static void mxs_dma_free_chan_resources(struct dma_chan *chan)
        dma_free_coherent(mxs_dma->dma_device.dev, PAGE_SIZE,
                        mxs_chan->ccw, mxs_chan->ccw_phys);
 
-       clk_disable(mxs_dma->clk);
+       clk_disable_unprepare(mxs_dma->clk);
 }
 
 static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
@@ -578,7 +578,7 @@ static int __init mxs_dma_init(struct mxs_dma_engine *mxs_dma)
 {
        int ret;
 
-       ret = clk_enable(mxs_dma->clk);
+       ret = clk_prepare_enable(mxs_dma->clk);
        if (ret)
                goto err_out;
 
@@ -604,7 +604,7 @@ static int __init mxs_dma_init(struct mxs_dma_engine *mxs_dma)
        writel(MXS_DMA_CHANNELS_MASK << MXS_DMA_CHANNELS,
                mxs_dma->base + HW_APBHX_CTRL1 + MXS_SET_ADDR);
 
-       clk_disable(mxs_dma->clk);
+       clk_disable_unprepare(mxs_dma->clk);
 
        return 0;