Hello. On 4/1/2016 1:21 AM, Bin Liu wrote:
Simplify things a bit by using devm functions where possible. Signed-off-by: David Lechner <da...@lechnology.com> --- v3 changes: * Kept clk variable to minimize noise. drivers/usb/musb/da8xx.c | 19 +++++-------------- 1 file changed, 5 insertions(+), 14 deletions(-) diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c index b03d3b8..0c1997c 100644 --- a/drivers/usb/musb/da8xx.c +++ b/drivers/usb/musb/da8xx.c @@ -490,20 +490,18 @@ static int da8xx_probe(struct platform_device *pdev) struct da8xx_glue *glue; struct platform_device_info pinfo; struct clk *clk; + int ret; - int ret = -ENOMEM; - - glue = kzalloc(sizeof(*glue), GFP_KERNEL); + glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); if (!glue) { dev_err(&pdev->dev, "failed to allocate glue context\n"); - goto err0; + return -ENOMEM; } - clk = clk_get(&pdev->dev, "usb20"); + clk = devm_clk_get(&pdev->dev, "usb20"); if (IS_ERR(clk)) { dev_err(&pdev->dev, "failed to get clock\n"); - ret = PTR_ERR(clk); - goto err3; + return PTR_ERR(clk);memory leak due to not kfree(glue).
No, since devm_kzalloc() was used, the memory will be automatically freed on returning error by da8xx_probe().
} ret = clk_enable(clk); @@ -560,12 +558,7 @@ err5: clk_disable(clk); err4: - clk_put(clk); - -err3: - kfree(glue); -err0: return ret; } @@ -576,8 +569,6 @@ static int da8xx_remove(struct platform_device *pdev) platform_device_unregister(glue->musb); usb_phy_generic_unregister(glue->phy); clk_disable(glue->clk); - clk_put(glue->clk); - kfree(glue);Doesn't match with $subject, I'd put them into a seperate patch.
Again, these are now done automatically.
Regards, -Bin.
MBR, Sergei -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
