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Revert dma: imx-dma: Fix kernel crash due to missing clock conversion

Browse source 
This reverts 9ea2c02baf, which was commit
a2367db2ec upstream.

It broke the build on 3.4, and was not needed there.

Reported-by: Eric Bénard <eric@eukrea.com>
Cc: Javier Martin <javier.martin@vista-silicon.com>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Vinod Koul <vinod.koul@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Fabio Estevam 2012-07-03 15:33:29 -03:00 committed by Greg Kroah-Hartman
parent 588d6b125f
commit 449daa0ed2
1 changed files with 11 additions and 25 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

36
drivers/dma/imx-dma.c
View file

@ -172,8 +172,7 @@ struct imxdma_engine {
struct device_dma_parameters dma_parms;
struct dma_device dma_device;
void __iomem *base;
struct clk *dma_ahb;
struct clk *dma_ipg;
struct clk *dma_clk;
spinlock_t lock;
struct imx_dma_2d_config slots_2d[IMX_DMA_2D_SLOTS];
struct imxdma_channel channel[IMX_DMA_CHANNELS];
@ -977,20 +976,10 @@ static int __init imxdma_probe(struct platform_device *pdev)
return 0;
}
imxdma->dma_ipg = devm_clk_get(&pdev->dev, "ipg");
if (IS_ERR(imxdma->dma_ipg)) {
ret = PTR_ERR(imxdma->dma_ipg);
goto err_clk;
}
imxdma->dma_ahb = devm_clk_get(&pdev->dev, "ahb");
if (IS_ERR(imxdma->dma_ahb)) {
ret = PTR_ERR(imxdma->dma_ahb);
goto err_clk;
}
clk_prepare_enable(imxdma->dma_ipg);
clk_prepare_enable(imxdma->dma_ahb);
imxdma->dma_clk = clk_get(NULL, "dma");
if (IS_ERR(imxdma->dma_clk))
return PTR_ERR(imxdma->dma_clk);
clk_enable(imxdma->dma_clk);
/* reset DMA module */
imx_dmav1_writel(imxdma, DCR_DRST, DMA_DCR);
@ -999,14 +988,16 @@ static int __init imxdma_probe(struct platform_device *pdev)
ret = request_irq(MX1_DMA_INT, dma_irq_handler, 0, "DMA", imxdma);
if (ret) {
dev_warn(imxdma->dev, "Can't register IRQ for DMA\n");
goto err_enable;
kfree(imxdma);
return ret;
}
ret = request_irq(MX1_DMA_ERR, imxdma_err_handler, 0, "DMA", imxdma);
if (ret) {
dev_warn(imxdma->dev, "Can't register ERRIRQ for DMA\n");
free_irq(MX1_DMA_INT, NULL);
goto err_enable;
kfree(imxdma);
return ret;
}
}
@ -1103,10 +1094,7 @@ err_init:
free_irq(MX1_DMA_INT, NULL);
free_irq(MX1_DMA_ERR, NULL);
}
err_enable:
clk_disable_unprepare(imxdma->dma_ipg);
clk_disable_unprepare(imxdma->dma_ahb);
err_clk:
kfree(imxdma);
return ret;
}
@ -1126,9 +1114,7 @@ static int __exit imxdma_remove(struct platform_device *pdev)
free_irq(MX1_DMA_ERR, NULL);
}
clk_disable_unprepare(imxdma->dma_ipg);
clk_disable_unprepare(imxdma->dma_ahb);
kfree(imxdma);
kfree(imxdma);
return 0;
}