linux-kernel - Re: [PATCH] mtd: nand: denali_pci: add missing pci_release

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Message-ID: <20161107145229.7c934989@bbrezillon>
Date:   Mon, 7 Nov 2016 14:52:29 +0100
From:   Boris Brezillon <boris.brezillon@...e-electrons.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        linux-mtd@...ts.infradead.org, Enrico Jorns <ejo@...gutronix.de>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Linas Vepstas <linasvepstas@...il.com>,
        Brian Norris <computersforpeace@...il.com>,
        Graham Moore <grmoore@...nsource.altera.com>,
        linux-kernel@...r.kernel.org, Richard Weinberger <richard@....at>,
        David Woodhouse <dwmw2@...radead.org>
Subject: Re: [PATCH] mtd: nand: denali_pci: add missing
 pci_release_regions() calls

On Mon, 07 Nov 2016 15:33:04 +0200
Andy Shevchenko <andriy.shevchenko@...ux.intel.com> wrote:

> On Thu, 2016-11-03 at 02:13 +0900, Masahiro Yamada wrote:
> > The probe function calls pci_request_regions(), but I do not see
> > corresponding pci_release_regions() calls.
> > 
> > While we are here, rename the jump labels to follow the guideline
> > "Choose label names which say what the goto does" suggested by
> > Documentation/CodingStyle.  
> 
> NACK!
> 
> Please, remove or revert this patch.
> Everything is done in pcim_release() function.

Indeed. I'll drop the patch.

Thanks,

Boris

> 
> > 
> > Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
> > ---
> > 
> >  drivers/mtd/nand/denali_pci.c | 14 +++++++++-----
> >  1 file changed, 9 insertions(+), 5 deletions(-)
> > 
> > diff --git a/drivers/mtd/nand/denali_pci.c
> > b/drivers/mtd/nand/denali_pci.c
> > index de31514..be8152f 100644
> > --- a/drivers/mtd/nand/denali_pci.c
> > +++ b/drivers/mtd/nand/denali_pci.c
> > @@ -76,28 +76,31 @@ static int denali_pci_probe(struct pci_dev *dev,
> > const struct pci_device_id *id)
> >  	denali->flash_reg = ioremap_nocache(csr_base, csr_len);
> >  	if (!denali->flash_reg) {
> >  		dev_err(&dev->dev, "Spectra: Unable to remap memory
> > region\n");
> > -		return -ENOMEM;
> > +		ret = -ENOMEM;
> > +		goto release_regions;
> >  	}
> >  
> >  	denali->flash_mem = ioremap_nocache(mem_base, mem_len);
> >  	if (!denali->flash_mem) {
> >  		dev_err(&dev->dev, "Spectra: ioremap_nocache
> > failed!");
> >  		ret = -ENOMEM;
> > -		goto failed_remap_reg;
> > +		goto unmap_reg;
> >  	}
> >  
> >  	ret = denali_init(denali);
> >  	if (ret)
> > -		goto failed_remap_mem;
> > +		goto unmap_mem;
> >  
> >  	pci_set_drvdata(dev, denali);
> >  
> >  	return 0;
> >  
> > -failed_remap_mem:
> > +unmap_mem:
> >  	iounmap(denali->flash_mem);
> > -failed_remap_reg:
> > +unmap_reg:
> >  	iounmap(denali->flash_reg);
> > +release_regions:
> > +	pci_release_regions(dev);
> >  	return ret;
> >  }
> >  
> > @@ -109,6 +112,7 @@ static void denali_pci_remove(struct pci_dev *dev)
> >  	denali_remove(denali);
> >  	iounmap(denali->flash_reg);
> >  	iounmap(denali->flash_mem);
> > +	pci_release_regions(dev);
> >  }
> >  
> >  static struct pci_driver denali_pci_driver = {  
>