tree 897cf88b201e0cc7e096bafa7d4053ad40327e49
parent 0ce010cdb12e45f4bf81ac82755bad3b4ab050b6
author Jim Chen <darchons@users.noreply.github.com> 1612376035 -0500
committer Nathan Hjelm <hjelmn@google.com> 1623122735 -0600

Windows: Try alternative methods to query port number

This commit is similar to #634 but I think it offers a better approach. The commit adds two more methods for querying the port number, in addition to the existing SPDRP_ADDRESS method, which may not actually return the port number when using USB drivers other than the Microsoft driver.

The first method uses SPDRP_LOCATION_INFORMATION, which may return a port in a format similar to "Port_#0002.Hub_#000D".

The second method uses SPDRP_LOCATION_PATHS, which returns the device location in a format similar to "PCIROOT(B2)#PCI(0300)#PCI(0000)#USBROOT(0)#USB(1)#USB(2)#USBMI(3)", where the port number is the number within the last "#USB()" token.

If both methods fail, SPDRP_ADDRESS is still used as a fallback.

Closes #867

Signed-off-by: Nathan Hjelm <hjelmn@google.com>