[PATCH i-g-t 1/3] tests/kms_getfb: Split property-ID get into helper

[Daniel Stone]

We'll want to reuse this, so split it out into a (smaller!) helper.

Signed-off-by: Daniel Stone <daniels at collabora.com>
---
 tests/kms_getfb.c | 36 +++++++++++++++++++-----------------
 1 file changed, 19 insertions(+), 17 deletions(-)

diff --git a/tests/kms_getfb.c b/tests/kms_getfb.c
index c5968e75..a9852626 100644
--- a/tests/kms_getfb.c
+++ b/tests/kms_getfb.c
@@ -72,6 +72,23 @@ static void get_ccs_fb(int fd, struct drm_mode_fb_cmd2 *ret)
 		gem_close(fd, add.handles[0]);
 }
 
+/**
+ * Find and return an arbitrary valid property ID.
+ */
+static uint32_t get_prop_id(int fd)
+{
+	igt_display_t display;
+
+	igt_display_init(&display, fd);
+	for (int i = 0; i < display.n_outputs; i++) {
+		igt_output_t *output = &display.outputs[i];
+		if (output->props[IGT_CONNECTOR_DPMS] != 0)
+			return output->props[IGT_CONNECTOR_DPMS];
+	}
+
+	return 0;
+}
+
 static void test_handle_input(int fd)
 {
 	struct drm_mode_fb_cmd2 add = {};
@@ -111,23 +128,8 @@ static void test_handle_input(int fd)
 	}
 
 	igt_subtest("getfb-handle-not-fb") {
-		struct drm_mode_fb_cmd get = { };
-		uint32_t prop_id = 0;
-		igt_display_t display;
-
-		/* Find a valid property ID to use. */
-		igt_display_init(&display, fd);
-		for (int i = 0; i < display.n_outputs; i++) {
-			igt_output_t *output = &display.outputs[i];
-
-			if (output->props[IGT_CONNECTOR_DPMS] != 0) {
-				prop_id = output->props[IGT_CONNECTOR_DPMS];
-				break;
-			}
-		}
-		igt_require(prop_id > 0);
-
-		get.fb_id = prop_id;
+		struct drm_mode_fb_cmd get = { .fb_id = get_prop_id(fd) };
+		igt_require(get.fb_id > 0);
 		do_ioctl_err(fd, DRM_IOCTL_MODE_GETFB, &get, ENOENT);
 	}
 }
-- 
2.16.2