Messages in this thread | | | Date | Wed, 17 Jul 2013 09:45:33 +0200 | From | Andrew Lunn <> | Subject | Re: [PATCH -next] mtd: orion_nand: convert to use devm_* APIs |
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On Wed, Jul 17, 2013 at 10:09:10AM +0800, Wei Yongjun wrote: > From: Wei Yongjun <yongjun_wei@trendmicro.com.cn> > > Convert to use devm_* APIs to avoid resources leak on error handling case. > > Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> > --- > drivers/mtd/nand/orion_nand.c | 29 +++++++++-------------------- > 1 file changed, 9 insertions(+), 20 deletions(-) > > diff --git a/drivers/mtd/nand/orion_nand.c b/drivers/mtd/nand/orion_nand.c > index 46f308d..ce711b4 100644 > --- a/drivers/mtd/nand/orion_nand.c > +++ b/drivers/mtd/nand/orion_nand.c > @@ -85,25 +85,23 @@ static int __init orion_nand_probe(struct platform_device *pdev) > int ret = 0; > u32 val = 0; > > - nc = kzalloc(sizeof(struct nand_chip) + sizeof(struct mtd_info), GFP_KERNEL); > + nc = devm_kzalloc(&pdev->dev, > + sizeof(struct nand_chip) + sizeof(struct mtd_info), > + GFP_KERNEL); > if (!nc) { > printk(KERN_ERR "orion_nand: failed to allocate device structure.\n"); > - ret = -ENOMEM; > - goto no_res; > + return -ENOMEM; > } > mtd = (struct mtd_info *)(nc + 1); > > res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > - if (!res) { > - ret = -ENODEV; > - goto no_res; > - } > + if (!res) > + return -ENODEV; > > - io_base = ioremap(res->start, resource_size(res)); > + io_base = devm_ioremap(&pdev->dev, res->start, resource_size(res)); > if (!io_base) { > printk(KERN_ERR "orion_nand: ioremap failed\n"); > - ret = -EIO; > - goto no_res; > + return -EIO;
Hi Wei
Thanks for working on this.
The above code can be further simplified:
res = platform_get_resource(pdev, IORESOURCE_MEM, 0); io_base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(io_base)) return PTR_ERR(io_base);
While you are editing this file, it would be nice to replace all the printk() statements with dev_err(), dev_info() etc. Please do that as a separate patch.
Thanks Andrew
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