---
lib/igt_kms.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/lib/igt_kms.c b/lib/igt_kms.c
index 681f2bb41b07..263f32883beb 100644
--- a/lib/igt_kms.c
+++ b/lib/igt_kms.c
@@ -2378,7 +2378,7 @@ drmModeModeInfo *igt_output_get_mode(igt_output_t *output)
/**
* igt_output_override_mode:
* @output: Output of which the mode will be overridden
- * @mode: New mode
+ * @mode: New mode, or NULL to disable override.
*
* Overrides the output's mode with @mode, so that it is used instead of the
* mode obtained with get connectors. Note that the mode is used without
@@ -2388,8 +2388,14 @@ void igt_output_override_mode(igt_output_t *output, drmModeModeInfo *mode)
{
igt_pipe_t *pipe = igt_output_get_driving_pipe(output);
- output->override_mode = *mode;
- output->use_override_mode = true;
+ if (mode)
+ output->override_mode = *mode;
+ else /* restore default_mode, may have been overwritten in igt_output_refresh */
+ kmstest_get_connector_default_mode(output->display->drm_fd,
+ output->config.connector,
+ &output->config.default_mode);
+
+ output->use_override_mode = !!mode;
if (pipe)
pipe->mode_changed = true;
--
2.5.5
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