[PATCH i-g-t v4 2/6] lib/igt_kms: Fix off-by-one bug on skip of missing pipe

Gabriel Krisman Bertazi
2017-09-27T18:34:33Z

display->n_pipes is zero-indexed, so N returned in
igt_display_get_n_pipes is already not a valid pipe. This patch
prevents kms_ccs from going nuts when testing the first unxesting pipe.

Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.co.uk>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
---
lib/igt_kms.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/igt_kms.c b/lib/igt_kms.c
index 7bcafc072f70..c7b169afba54 100644
--- a/lib/igt_kms.c
+++ b/lib/igt_kms.c
@@ -1865,7 +1865,7 @@ void igt_display_require_output_on_pipe(igt_display_t *display, enum pipe pipe)
{
igt_output_t *output;

- igt_skip_on_f(igt_display_get_n_pipes(display) < pipe,
+ igt_skip_on_f(pipe >= igt_display_get_n_pipes(display),
"Pipe %s does not exist.\n", kmstest_pipe_name(pipe));

for_each_valid_output_on_pipe(display, pipe, output)
--
2.11.0