linux-kernel - Re: [-mm patch] aic7xxx: check irq validity (was Re: 2.6.18-mm2)

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Message-ID: <452014C2.1050000@garzik.org>
Date:	Sun, 01 Oct 2006 15:19:30 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	Arjan van de Ven <arjan@...radead.org>
CC:	Matthew Wilcox <matthew@....cx>, linux-scsi@...r.kernel.org,
	"Linux-Kernel," <linux-kernel@...r.kernel.org>,
	"J.A. Magall??n" <jamagallon@....com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Andrew Morton <akpm@...l.org>,
	Frederik Deweerdt <deweerdt@...e.fr>
Subject: Re: [-mm patch] aic7xxx: check irq validity (was Re: 2.6.18-mm2)

Arjan van de Ven wrote:
> well... why not go one step further and eliminate the flags argument
> entirely? And use pci_name() for the name (so eliminate the argument ;)
> and always pass pdev as data, so that that argument can go away too....
> 
> that'll cover 99% of the request_irq() users for pci devices.. and makes
> it really nicely simple and consistent.

Disagree.  That would involve rewriting a lot of drivers.

flags: may or may not need sample-random flag.

name: is always the ethernet interface, for net drivers, or did you 
forget from your irqbalance days?  ;-)

data: in practice, is _rarely_ struct pci_dev.  It's usually a 
driver-private structure which is the structure most frequently 
accessed.  struct pci_dev* is rarely accessed inside the interrupt 
handler, except maybe somewhere deep in an error handling path.

	Jeff

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