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authorBoris BREZILLON <b.brezillon@overkiz.com>2013-06-19 13:14:54 +0200
committerVinod Koul <vinod.koul@intel.com>2013-07-05 11:40:57 +0530
commitf784d9c90469d75a9f7a38c1568f47e95ae504ca (patch)
tree1ab9f2905dfe2bd8e02a15ee076ca0c78661a944 /drivers/dma/at_hdmac.c
parentc3dbc60c9b2510fee6cea9b77b89a7708bf98bd3 (diff)
downloadblackbird-op-linux-f784d9c90469d75a9f7a38c1568f47e95ae504ca.tar.gz
blackbird-op-linux-f784d9c90469d75a9f7a38c1568f47e95ae504ca.zip
dmaengine: at_hdmac: prepare clk before calling enable
Replace clk_enable/disable with clk_prepare_enable/disable_unprepare to avoid common clk framework warnings. Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com> [nicolas.ferre@atmel.com: remove return code checking in at_dma_resume_noirq()] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Diffstat (limited to 'drivers/dma/at_hdmac.c')
-rw-r--r--drivers/dma/at_hdmac.c15
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index 3e070d2fb6a3..c787f38a186a 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -1460,7 +1460,9 @@ static int __init at_dma_probe(struct platform_device *pdev)
err = PTR_ERR(atdma->clk);
goto err_clk;
}
- clk_enable(atdma->clk);
+ err = clk_prepare_enable(atdma->clk);
+ if (err)
+ goto err_clk_prepare;
/* force dma off, just in case */
at_dma_off(atdma);
@@ -1560,7 +1562,8 @@ err_of_dma_controller_register:
err_pool_create:
free_irq(platform_get_irq(pdev, 0), atdma);
err_irq:
- clk_disable(atdma->clk);
+ clk_disable_unprepare(atdma->clk);
+err_clk_prepare:
clk_put(atdma->clk);
err_clk:
iounmap(atdma->regs);
@@ -1596,7 +1599,7 @@ static int at_dma_remove(struct platform_device *pdev)
list_del(&chan->device_node);
}
- clk_disable(atdma->clk);
+ clk_disable_unprepare(atdma->clk);
clk_put(atdma->clk);
iounmap(atdma->regs);
@@ -1615,7 +1618,7 @@ static void at_dma_shutdown(struct platform_device *pdev)
struct at_dma *atdma = platform_get_drvdata(pdev);
at_dma_off(platform_get_drvdata(pdev));
- clk_disable(atdma->clk);
+ clk_disable_unprepare(atdma->clk);
}
static int at_dma_prepare(struct device *dev)
@@ -1672,7 +1675,7 @@ static int at_dma_suspend_noirq(struct device *dev)
/* disable DMA controller */
at_dma_off(atdma);
- clk_disable(atdma->clk);
+ clk_disable_unprepare(atdma->clk);
return 0;
}
@@ -1702,7 +1705,7 @@ static int at_dma_resume_noirq(struct device *dev)
struct dma_chan *chan, *_chan;
/* bring back DMA controller */
- clk_enable(atdma->clk);
+ clk_prepare_enable(atdma->clk);
dma_writel(atdma, EN, AT_DMA_ENABLE);
/* clear any pending interrupt */
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