Re: [PATCH v1 1/1] fpga: dfl: pci: Use pci_find_vsec_capability() when looking for DFL

From: Tom Rix
Date: Wed Nov 10 2021 - 07:27:53 EST



On 11/10/21 12:24 AM, Andy Shevchenko wrote:
On Tue, Nov 09, 2021 at 10:27:58AM -0800, Tom Rix wrote:
On 11/9/21 10:05 AM, Andy Shevchenko wrote:
On Tue, Nov 09, 2021 at 07:55:43AM -0800, Tom Rix wrote:
On 11/9/21 7:41 AM, Andy Shevchenko wrote:
...

+ voff = pci_find_vsec_capability(dev, PCI_VENDOR_ID_INTEL, PCI_VSEC_ID_INTEL_DFLS);
This may be a weakness in the origin code, but intel isn't the exclusive
user of DFL.
This does not change the original code. If you think so, this can be extended
later on.
I would rather see this fixed now or explained why this isn't a problem.
This is out of scope of this change in a few ways:
- we don't do 2+ things in one patch
- the change doesn't change behaviour
- the change is a simple cleanup
- another vendor may well have quite different VSEC ID for DFL

If you think that it should be needed, one can come up with it later on.

Fixing a problem is more useful than a cleanup. The fix should come first.

Tom