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Re: [Qemu-devel] Re: [PATCH 09/15] eepro100: convert to new pci interfac
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] Re: [PATCH 09/15] eepro100: convert to new pci interface |
Date: |
Wed, 10 Feb 2010 12:48:13 +0200 |
User-agent: |
Mutt/1.5.19 (2009-01-05) |
On Wed, Feb 10, 2010 at 11:43:29AM +0100, Markus Armbruster wrote:
> "Michael S. Tsirkin" <address@hidden> writes:
>
> > On Wed, Feb 10, 2010 at 07:32:10AM +0100, Stefan Weil wrote:
> >> See my inline comments.
> >>
> >>
> >> Anthony Liguori schrieb:
> [...]
> >> > -static void pci_map(PCIDevice * pci_dev, int region_num,
> >> > - pcibus_t addr, pcibus_t size, int type)
> >> > +static void pci_io_write(PCIDevice *dev, pcibus_t addr, int size,
> >> > + uint32_t value)
> >> > {
> >> > - EEPRO100State *s = DO_UPCAST(EEPRO100State, dev, pci_dev);
> >> > -
> >> > - TRACE(OTHER, logout("region %d, addr=0x%08"FMT_PCIBUS", "
> >> > - "size=0x%08"FMT_PCIBUS", type=%d\n",
> >> > - region_num, addr, size, type));
> >> > + EEPRO100State *s = DO_UPCAST(EEPRO100State, dev, dev);
> >> >
> >>
> >> Please don't change the name of the PCIDevice pointer argument
> >> from pci_dev to dev.
> >>
> >> This dev, dev in DO_UPCAST is ugly and misleading.
> >
> > It's a matter of taste: I actually think it's pretty: I never remember
> > which argument of DO_UPCAST is which, and if both are dev it doesn't
> > matter.
>
> I also have trouble remembering how to use DO_UPCAST(), but playing
> games with identifiers is a poor fix for that. I find the use of the
> same name "dev" for two different things in the same expression rather
> confusing. Could we improve DO_UPCAST() instead?
>
> For what it's worth, I have no trouble with container_of(). DO_UPCAST()
> takes the same arguments in a different order, which I find irritating.
>
> [...]
IMO it would be ideal to remove offset assumptions where possible
and then we can use container_of.
--
MST
- Re: [Qemu-devel] [PATCH 07/15] ac97: convert to new PCI API, (continued)
[Qemu-devel] [PATCH 06/15] wdt_i6300esb: convert to new pci inteface, Anthony Liguori, 2010/02/09
[Qemu-devel] [PATCH 04/15] e1000: convert to new pci interface, Anthony Liguori, 2010/02/09
[Qemu-devel] [PATCH 09/15] eepro100: convert to new pci interface, Anthony Liguori, 2010/02/09
Re: [Qemu-devel] [PATCH 09/15] eepro100: convert to new pci interface, Anthony Liguori, 2010/02/10
[Qemu-devel] [PATCH 03/15] lsi53c895a: convert to new pci interfaces, Anthony Liguori, 2010/02/09
[Qemu-devel] [PATCH 15/15] pci: byte swap as PCI interface layer, Anthony Liguori, 2010/02/09
[Qemu-devel] [PATCH 10/15] virtio-pci: convert to new pci interface, Anthony Liguori, 2010/02/09
[Qemu-devel] [PATCH 11/15] pci: add pci_register_msix_region, Anthony Liguori, 2010/02/09
[Qemu-devel] [PATCH 14/15] usb-uhci: convert to new pci interface, Anthony Liguori, 2010/02/09
[Qemu-devel] [PATCH 08/15] es1370: convert to new pci interface, Anthony Liguori, 2010/02/09
[Qemu-devel] [PATCH 13/15] pcnet: convert to new pci interface, Anthony Liguori, 2010/02/09
[Qemu-devel] [PATCH 12/15] ne2000: convert to new pci interface, Anthony Liguori, 2010/02/09
[Qemu-devel] Re: [PATCH 0/15][RFC] New PCI interfaces, Michael S. Tsirkin, 2010/02/10