Re: [PATCH] call 'pci_dev_put' after pci_get_device

[Brian Gerst <bgerst@didntduck.org>]

shaohua li wrote:
> Hi,
> Some code didn't call 'pci_dev_put' after pci_get_device. Below is an
> incomplete list.
> 
> Thanks,
> Shaohua

If pci_get_device() is passed in a non-NULL dev it internally does a 
pci_dev_put().  So if you do a complete while loop (ie. no breaks, gotos 
or returns), pci_dev_put() is unnecessary.

> 
> Signed-off-by: Li Shaohua <shaoh.li@gmail.com>
> 
> ===== drivers/pci/pci.c 1.73 vs edited =====
> --- 1.73/drivers/pci/pci.c	2004-10-07 00:42:55 +08:00
> +++ edited/drivers/pci/pci.c	2004-10-25 17:30:36 +08:00
> @@ -734,6 +734,7 @@ static int __devinit pci_init(void)
>  
>  	while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
>  		pci_fixup_device(pci_fixup_final, dev);
> +		pci_dev_put(dev);
>  	}
>  	return 0;
>  }
> ===== drivers/pci/quirks.c 1.55 vs edited =====
> --- 1.55/drivers/pci/quirks.c	2004-10-20 00:54:38 +08:00
> +++ edited/drivers/pci/quirks.c	2004-10-25 17:29:48 +08:00
> @@ -38,6 +38,7 @@ static void __devinit quirk_passive_rele
>  			dlc |= 1<<1;
>  			pci_write_config_byte(d, 0x82, dlc);
>  		}
> +		pci_dev_put(d);
>  	}
>  }
>  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82441,	quirk_passive_release
> );
> ===== drivers/pci/setup-irq.c 1.5 vs edited =====
> --- 1.5/drivers/pci/setup-irq.c	2004-10-07 00:44:51 +08:00
> +++ edited/drivers/pci/setup-irq.c	2004-10-25 17:29:08 +08:00
> @@ -67,5 +67,6 @@ pci_fixup_irqs(u8 (*swizzle)(struct pci_
>  	struct pci_dev *dev = NULL;
>  	while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
>  		pdev_fixup_irq(dev, swizzle, map_irq);
> +		pci_dev_put(dev);
>  	}
>  }