linux-kernel - Re: Can we remove pci_find

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Message-ID: <m3r5pu6nzc.fsf@intrepid.localdomain>
Date:	Wed, 13 Jan 2010 16:09:11 +0100
From:	Krzysztof Halasa <khc@...waw.pl>
To:	Greg KH <gregkh@...e.de>
Cc:	Ben Hutchings <bhutchings@...arflare.com>,
	Tilman Schmidt <tilman@...p.cc>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	LKML <linux-kernel@...r.kernel.org>, netdev@...r.kernel.org,
	Karsten Keil <isdn@...ux-pingi.de>,
	isdn4linux@...tserv.isdn4linux.de
Subject: Re: Can we remove pci_find_device() yet?

Greg KH <gregkh@...e.de> writes:

>> One of our older controllers had a similar design error in that the two
>> functions would sometimes have to be reset together.  The way we look
>> for the second function is:
>> 
>> 	dev = pci_dev_get(dev1);
>> 	while ((dev = pci_get_device(vendor_id, device_id, dev))) {
>> 		if (dev->bus == dev1->bus &&
>> 		    dev->devfn == dev1->devfn + 1) {
>> 			dev2 = dev;
>> 			break;
>> 		}
>> 	}
>> 
>> I assume this is 'properly' since no-one has told me otherwise.
>
> As of right now, yes, this is the "correct" way to do this.
>
> I need to dig up the "let multiple drivers bind to a single device"
> patch set to make this not necessary in the future.

Ben and Greg, thanks.
-- 
Krzysztof Halasa
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