Re: [KJ] replacing pci_find_device in isdn driver

[Greg KH <greg@kroah.com>]

On Wed, Feb 21, 2007 at 05:09:54PM +0530, Surya wrote:
> 
> Hi,
>   replacing the pci_find_device with pci_get_device and its respective
> cleanup function pci_dev_put. Applies and compiles clean on the latest
> Linus tree. But not tested!!
> 
> thanks.
> 
> Signed-off-by: Surya Prabhakar <surya.prabhakar@wipro.com>
> 
> diff --git a/drivers/isdn/hisax/avm_pci.c b/drivers/isdn/hisax/avm_pci.c
> index b04a178..2991780 100644
> --- a/drivers/isdn/hisax/avm_pci.c
> +++ b/drivers/isdn/hisax/avm_pci.c
> @@ -789,19 +789,19 @@ setup_avm_pcipnp(struct IsdnCard *card)
>  	}
>  #endif
>  #ifdef CONFIG_PCI
> -	if ((dev_avm = pci_find_device(PCI_VENDOR_ID_AVM,
> +	if ((dev_avm = pci_get_device(PCI_VENDOR_ID_AVM,
>  		PCI_DEVICE_ID_AVM_A1,  dev_avm))) {
> -		if (pci_enable_device(dev_avm))
> -			return(0);
> +			if (pci_enable_device(dev_avm)) 
> +				goto dev_avm_cleanup;

Your indentation here is a bit "odd".

You also added a trailing space to the line, not nice.

>  		cs->irq = dev_avm->irq;
>  		if (!cs->irq) {
>  			printk(KERN_ERR "FritzPCI: No IRQ for PCI card found\n");
> -			return(0);
> +			goto dev_avm_cleanup;
>  		}
>  		cs->hw.avm.cfg_reg = pci_resource_start(dev_avm, 1);
>  		if (!cs->hw.avm.cfg_reg) {
>  			printk(KERN_ERR "FritzPCI: No IO-Adr for PCI card found\n");
> -			return(0);
> +			goto dev_avm_cleanup;
>  		}
>  		cs->subtyp = AVM_FRITZ_PCI;
>  	} else {
> @@ -822,7 +822,7 @@ ready:
>  		       CardType[card->typ],
>  		       cs->hw.avm.cfg_reg,
>  		       cs->hw.avm.cfg_reg + 31);
> -		return (0);
> +		goto dev_avm_cleanup;
>  	}
>  	switch (cs->subtyp) {
>  	  case AVM_FRITZ_PCI:
> @@ -842,7 +842,7 @@ ready:
>  		break;
>  	  default:
>  	  	printk(KERN_WARNING "AVM unknown subtype %d\n", cs->subtyp);
> -	  	return(0);
> +		goto dev_avm_cleanup;
>  	}
>  	printk(KERN_INFO "HiSax: %s config irq:%d base:0x%X\n",
>  		(cs->subtyp = AVM_FRITZ_PCI) ? "AVM Fritz!PCI" : "AVM Fritz!PnP",
> @@ -858,5 +858,14 @@ ready:
>  	cs->irq_func = &avm_pcipnp_interrupt;
>  	cs->writeisac(cs, ISAC_MASK, 0xFF);
>  	ISACVersion(cs, (cs->subtyp = AVM_FRITZ_PCI) ? "AVM PCI:" : "AVM PnP:");
> +	
> +	if (dev_avm) 
> +		pci_dev_put(dev_avm);
> +	

You don't have to check to call pci_dev_put(), you can pass NULL to it
and it will not die.

>  	return (1);
> +	
> +dev_avm_cleanup:
> +	if (dev_avm) 
> +		pci_dev_put(dev_avm);

Same thing here, the check isn't needed.

Care to redo it with these minor fixes?  Other than that, the logic
looks correct.

thanks,

greg k-h
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