diff options
| author |   Ulf Hansson <ulf.hansson@linaro.org> | 2012-08-23 13:41:58 +0200 |
|---|---|---|
| committer |   Vinod Koul <vinod.koul@linux.intel.com> | 2012-08-31 06:01:55 +0530 |
| commit | b707c65865e74b5cd98c66cb67fda8543248cb3b (patch) | |
| tree | a021c829d46f8589f2a21924661127bb19adaded /drivers/dma | |
| parent | drivers/dma/amba-pl08x.c: fix error return code (diff) | |
| download | linux-dev-b707c65865e74b5cd98c66cb67fda8543248cb3b.tar.xz linux-dev-b707c65865e74b5cd98c66cb67fda8543248cb3b.zip | |
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>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/ste_dma40.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 000d309602b2..826d0d5d5b0b 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -2920,19 +2920,23 @@ static struct d40_base * __init d40_hw_detect_init(struct platform_device *pdev) struct d40_base *base = NULL; int num_log_chans = 0; int num_phy_chans; + int clk_ret = -EINVAL; int i; u32 pid; u32 cid; u8 rev; clk = clk_get(&pdev->dev, NULL); - if (IS_ERR(clk)) { d40_err(&pdev->dev, "No matching clock found\n"); goto failure; } - clk_enable(clk); + clk_ret = clk_prepare_enable(clk); + if (clk_ret) { + d40_err(&pdev->dev, "Failed to prepare/enable clock\n"); + goto failure; + } /* Get IO for DMAC base address */ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "base"); @@ -3062,10 +3066,10 @@ static struct d40_base * __init d40_hw_detect_init(struct platform_device *pdev) return base; failure: - if (!IS_ERR(clk)) { - clk_disable(clk); + if (!clk_ret) + clk_disable_unprepare(clk); + if (!IS_ERR(clk)) clk_put(clk); - } if (virtbase) iounmap(virtbase); if (res) |