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dma/ste_dma40: Fixup clock usage during probe
Fixup some errorhandling for clocks during probe and make sure to use clk_prepare as well as clk_enable. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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parent
983d7beb7d
commit
b707c65865
1 changed files with 9 additions and 5 deletions
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@ -2920,19 +2920,23 @@ static struct d40_base * __init d40_hw_detect_init(struct platform_device *pdev)
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struct d40_base *base = NULL;
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struct d40_base *base = NULL;
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int num_log_chans = 0;
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int num_log_chans = 0;
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int num_phy_chans;
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int num_phy_chans;
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int clk_ret = -EINVAL;
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int i;
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int i;
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u32 pid;
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u32 pid;
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u32 cid;
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u32 cid;
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u8 rev;
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u8 rev;
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clk = clk_get(&pdev->dev, NULL);
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clk = clk_get(&pdev->dev, NULL);
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if (IS_ERR(clk)) {
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if (IS_ERR(clk)) {
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d40_err(&pdev->dev, "No matching clock found\n");
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d40_err(&pdev->dev, "No matching clock found\n");
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goto failure;
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goto failure;
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}
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}
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clk_enable(clk);
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clk_ret = clk_prepare_enable(clk);
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if (clk_ret) {
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d40_err(&pdev->dev, "Failed to prepare/enable clock\n");
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goto failure;
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}
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/* Get IO for DMAC base address */
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/* Get IO for DMAC base address */
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res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "base");
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res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "base");
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@ -3062,10 +3066,10 @@ static struct d40_base * __init d40_hw_detect_init(struct platform_device *pdev)
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return base;
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return base;
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failure:
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failure:
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if (!IS_ERR(clk)) {
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if (!clk_ret)
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clk_disable(clk);
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clk_disable_unprepare(clk);
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if (!IS_ERR(clk))
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clk_put(clk);
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clk_put(clk);
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}
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if (virtbase)
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if (virtbase)
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iounmap(virtbase);
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iounmap(virtbase);
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if (res)
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if (res)
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