st/prober: On Windows interface is basically a reserved identifier

Thanks to combaseapi.h we can't use that name.
Similar issue: https://issues.chromium.org/issues/40130800

Reported-by: Michael Haselton <mhaselton@nvidia.com>
Part-of: <https://gitlab.freedesktop.org/monado/monado/-/merge_requests/2491>

src/xrt/state_trackers/prober/p_dump.c

@@ -155,7 +155,7 @@ p_dump_device(struct prober *p, struct prober_device *pdev, int id, bool use_std
 	for (size_t j = 0; j < pdev->num_hidraws; j++) {
 		struct prober_hidraw *hidraw = &pdev->hidraws[j];
 
-		PTT("hidraw.iface:     %i", (int)hidraw->interface);
+		PTT("hidraw.iface:     %i", (int)hidraw->hid_iface);
 		PTT("hidraw.path:      '%s'", hidraw->path);
 	}
 #endif

src/xrt/state_trackers/prober/p_prober.c

@@ -101,7 +101,7 @@ p_select_device(struct xrt_prober *xp, struct xrt_device **xdevs, size_t xdev_co
 static int
 p_open_hid_interface(struct xrt_prober *xp,
                      struct xrt_prober_device *xpdev,
-                     int interface,
+                     int hid_iface,
                      struct os_hid_device **out_hid_dev);
 
 static int
@@ -1185,7 +1185,7 @@ p_select_device(struct xrt_prober *xp, struct xrt_device **xdevs, size_t xdev_co
 static int
 p_open_hid_interface(struct xrt_prober *xp,
                      struct xrt_prober_device *xpdev,
-                     int interface,
+                     int hid_iface,
                      struct os_hid_device **out_hid_dev)
 {
 	XRT_TRACE_MARKER();
@@ -1197,7 +1197,7 @@ p_open_hid_interface(struct xrt_prober *xp,
 	for (size_t j = 0; j < pdev->num_hidraws; j++) {
 		struct prober_hidraw *hidraw = &pdev->hidraws[j];
 
-		if (hidraw->interface != interface) {
+		if (hidraw->hid_iface != hid_iface) {
 			continue;
 		}
 
@@ -1210,13 +1210,13 @@ p_open_hid_interface(struct xrt_prober *xp,
 		return 0;
 	}
 
-	U_LOG_E("Could not find the requested hid interface (%i) on the device!", interface);
+	U_LOG_E("Could not find the requested hid interface (%i) on the device!", hid_iface);
 	return -1;
 
 #elif defined(XRT_OS_WINDOWS)
 	(void)pdev;
 	(void)ret;
-	U_LOG_E("HID devices not yet supported on Windows, cannot open interface (%i)", interface);
+	U_LOG_E("HID devices not yet supported on Windows, cannot open interface (%i)", hid_iface);
 	return -1;
 #else
 #error "no port of hid code"

src/xrt/state_trackers/prober/p_prober.h

@@ -50,7 +50,7 @@
  */
 struct prober_hidraw
 {
-	ssize_t interface;
+	ssize_t hid_iface;
 	const char *path;
 };
 

src/xrt/state_trackers/prober/p_udev.c

@@ -493,14 +493,14 @@ p_udev_enumerate_hidraw(struct prober *p, struct udev *udev)
 }
 
 static void
-p_udev_add_hidraw(struct prober_device *pdev, uint32_t interface, const char *path)
+p_udev_add_hidraw(struct prober_device *pdev, uint32_t hid_iface, const char *path)
 {
 	U_ARRAY_REALLOC_OR_FREE(pdev->hidraws, struct prober_hidraw, (pdev->num_hidraws + 1));
 
 	struct prober_hidraw *hidraw = &pdev->hidraws[pdev->num_hidraws++];
 	U_ZERO(hidraw);
 
-	hidraw->interface = interface;
+	hidraw->hid_iface = hid_iface;
 	hidraw->path = strdup(path);
 }