tests/testdisplay.c: Add a option '-r'.

With the option '-r', the testdisplay could paint a 2-D bar code(QR
bar code) on the screen. The word "pass" is hiden in the bar code
image.  Further more, with this option, testdisplay will wait until a
system signal 'SIGUSR1' coming after each mode setting. This function
is for another program to control testdisplay.

danvet: Fix up the missing static.

Signed-off-by: Yi Sun <yi.sun@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/drmtest.c b/lib/drmtest.c
index 34db1261..2101f6a9 100644
--- a/lib/drmtest.c
+++ b/lib/drmtest.c
@@ -774,5 +774,6 @@ void kmstest_dump_mode(drmModeModeInfo *mode)
 	       mode->flags,
 	       mode->type,
 	       mode->clock);
+	fflush(stdout);
 }