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From: Roland Dreier <rdreier@cisco.com>
To: Grant Grundler <grundler@parisc-linux.org>
Cc: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>,
	Andrew Morton <akpm@osdl.org>, Greg KH <greg@kroah.com>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	linux-pci@atrey.karlin.mff.cuni.cz
Subject: Re: [PATCH 0/4] PCI legacy I/O port free driver (take4)
Date: Thu, 02 Mar 2006 11:50:59 -0800
Message-ID: <adalkvswrq4.fsf@cisco.com> (raw)
In-Reply-To: <20060302193441.GG28895@flint.arm.linux.org.uk> (Russell King's message of "Thu, 2 Mar 2006 19:34:41 +0000")

    Russell> Why isn't pci_enable_device_bars() sufficient - why do we
    Russell> have to have another interface to say "we don't want BARs
    Russell> XXX" ?

That's an excellent point.  It does look like fixing
pci_enable_device_bars() would be a reasonable interface as well.
Currently, pci_enable_device() calls pci_enable_device_bars() on all
resources, and then does two more things:

    - It calls pci_fixup_device() on the device
    - It sets dev->is_enabled

Both of these things look like they could just be moved into
pci_enable_device_bars(), leaving pci_enable_device() as a
compatibility wrapper.

Along with a fix for pci_request_regions(), the legacy-free patch
would just modify drivers for devices that know they don't need a
particular BAR, without adding an extra flag to the pci device struct.

 - R.

  reply index

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-03-02 15:12 Kenji Kaneshige
2006-03-02 15:14 ` [PATCH 1/4] PCI legacy I/O port free driver (take4) - Add no_ioport flag into pci_dev Kenji Kaneshige
2006-03-02 15:16 ` [PATCH 2/4] PCI legacy I/O port free driver (take4) - Update Documentation/pci.txt Kenji Kaneshige
2006-03-02 15:18 ` [PATCH 3/4] PCI legacy I/O port free driver (take4) - Make Intel e1000 driver legacy I/O port free Kenji Kaneshige
2006-03-02 15:20 ` [PATCH 4/4] PCI legacy I/O port free driver (take4) - Make Emulex lpfc " Kenji Kaneshige
2006-03-02 15:50 ` [PATCH 0/4] PCI legacy I/O port free driver (take4) Russell King
2006-03-02 16:23   ` Kenji Kaneshige
2006-03-02 16:41     ` Greg KH
2006-03-02 17:24   ` Grant Grundler
2006-03-02 18:00     ` Russell King
2006-03-02 18:12       ` Jeff Garzik
2006-03-02 19:13         ` Russell King
2006-03-02 20:01           ` Jeff Garzik
2006-03-02 19:23       ` Grant Grundler
2006-03-02 19:34     ` Russell King
2006-03-02 19:50       ` Roland Dreier [this message]
2006-03-03  3:17       ` Kenji Kaneshige
2006-03-03  6:59         ` Kenji Kaneshige
2006-03-06  1:38           ` Kenji Kaneshige
2006-03-10  2:10       ` Adam Belay
2006-03-10  4:10         ` Kenji Kaneshige
2006-03-10  7:49           ` Russell King
2006-03-10  8:33         ` Russell King
2006-03-13  5:47           ` Kenji Kaneshige

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