[PATCH 2/4] dma: mxs-dma: Always leave mxs_dma_init() with the clock disabled.
From: Lothar WaÃmann
Date: Thu Dec 08 2011 - 03:16:16 EST
There is no need to have the clock enabled all the time the driver is
loaded.
It will be enabled anyway in mxs_dma_alloc_chan_resources() when a
channel is actually going to be used.
Signed-off-by: Lothar WaÃmann <LW@xxxxxxxxxxxxxxxxxxx>
---
drivers/dma/mxs-dma.c | 7 ++-----
1 files changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
index f228f55..c7574e8 100644
--- a/drivers/dma/mxs-dma.c
+++ b/drivers/dma/mxs-dma.c
@@ -580,7 +580,7 @@ static int __init mxs_dma_init(struct mxs_dma_engine *mxs_dma)
ret = clk_enable(mxs_dma->clk);
if (ret)
- goto err_out;
+ return ret;
ret = mxs_reset_block(mxs_dma->base);
if (ret)
@@ -604,11 +604,8 @@ 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);
-
- return 0;
-
err_out:
+ clk_disable(mxs_dma->clk);
return ret;
}
--
1.5.6.5
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