OrgACRN
/
acrn-kernel
mirror of https://github.com/projectacrn/acrn-kernel.git
1
0
Fork 0
Code Issues Releases Wiki Activity

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>
This commit is contained in:
Boris BREZILLON 2013-06-19 13:14:54 +02:00 committed by Vinod Koul
parent c3dbc60c9b
commit f784d9c904
1 changed files with 9 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/dma/at_hdmac.c
View File

@ -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 @@ static int __init at_dma_probe(struct platform_device *pdev)
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 */