Re: [PATCH v4 2/5] PCI: iproc: Add PAXC interface support

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Hi Arnd,

On 11/27/2015 1:11 PM, Arnd Bergmann wrote:
On Friday 27 November 2015 12:56:05 Ray Jui wrote:

You seem to only need the identifiers in order to set a single
pointer, so just point to that array directly.

Not just a single pointer. This sets the iProc PCIe interface type,
which is an enum. Based on the interface type, both the iProc PCIe core
driver and the iProc PCIe MSI driver can 1) load the correct set of
register offsets; 2) skip/invoke some of the link detection, controller
reset related behaviors; 3) setting up the correct number of MSI event
queue regions and MSI address regions.

Ok, fair enough. I had missed 2) and 3) here. It could still be done
as a structure (rather than function pointers) with individual named
members for each register offset along with bool flags for 2) and
integers to describe 3).

Please that suggestion some thought, and then decide for yourself,
I won't complain if you keep the current version.

	Arnd


I'll definitely re-visit this when I need to add support to the next revision of PAXC interface. At that time, what you have suggested may become almost mandatory in order to make the core code clean and more maintainable.

For now, I'll keep this as it is.

Thanks!

Ray
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