vbltest: Check error codes returned from libdrm

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>

1 files changed, 16 insertions, 4 deletions

diff --git a/tests/vbltest/vbltest.c b/tests/vbltest/vbltest.c
index 2fe56b2e..903ca0f4 100644
--- a/tests/vbltest/vbltest.c
+++ b/tests/vbltest/vbltest.c
@@ -102,7 +102,7 @@ static void usage(char *name)
 
 int main(int argc, char **argv)
 {
-	int i, c, fd;
+	int i, c, fd, ret;
 	char *modules[] = { "i915", "radeon", "nouveau", "vmwgfx" };
 	drmVBlank vbl;
 	drmEventContext evctx;
@@ -141,7 +141,11 @@ int main(int argc, char **argv)
 	if (secondary)
 		vbl.request.type |= DRM_VBLANK_SECONDARY;
 	vbl.request.sequence = 0;
-	drmWaitVBlank(fd, &vbl);
+	ret = drmWaitVBlank(fd, &vbl);
+	if (ret != 0) {
+		printf("drmWaitVBlank (relative) failed ret: %i\n", ret);
+		return -1;
+	}
 
 	printf("starting count: %d\n", vbl.request.sequence);
 
@@ -154,7 +158,11 @@ int main(int argc, char **argv)
 		vbl.request.type |= DRM_VBLANK_SECONDARY;
 	vbl.request.sequence = 1;
 	vbl.request.signal = (unsigned long)&handler_info;
-	drmWaitVBlank(fd, &vbl);
+	ret = drmWaitVBlank(fd, &vbl);
+	if (ret != 0) {
+		printf("drmWaitVBlank (relative, event) failed ret: %i\n", ret);
+		return -1;
+	}
 
 	/* Set up our event handler */
 	memset(&evctx, 0, sizeof evctx);
@@ -181,7 +189,11 @@ int main(int argc, char **argv)
 			break;
 		}
 
-		drmHandleEvent(fd, &evctx);
+		ret = drmHandleEvent(fd, &evctx);
+		if (ret != 0) {
+			printf("drmHandleEvent failed: %i\n", ret);
+			return -1;
+		}
 	}
 
 	return 0;