Messages in this thread | | | From | Arnd Bergmann <> | Subject | Re: [PATCH v7 1/6] pci: Introduce pci_register_io_range() helper function. | Date | Mon, 07 Apr 2014 13:16:56 +0200 |
| |
On Monday 07 April 2014 19:13:28 Benjamin Herrenschmidt wrote: > On Mon, 2014-04-07 at 09:35 +0100, Liviu Dudau wrote: > > Thanks for the summary, is really useful as I was recently looking > > into code in that > > area. One thing I was trying to understand is why ppc needs _IO_BASE > > at all rather > > than using the generic PCI_IOBASE? > > Perhaps because our code predates it ? I haven't looked much into > the semantics of PCI_IOBASE yet...
Yes, I'm pretty sure that's all there is to it. PCI_IOBASE just happened to be an identifier we picked for asm-generic, but the use on PowerPC is much older than the generic file.
Arnd
| |