[Intel-gfx] [PATCH i-g-t] igt_kms: Dynamically allocate igt_display->pipes

[Lyude]

Many GPUs have more then 3 pipes available, so hard limiting this to
I915_MAX_PIPES prevents us from using anything that relies on
igt_display_init() on non-intel systems (since we end up writing out of
bounds and seg faulting). Fix this by dynamically allocating
igt_display->pipes using the number of pipes we've detected on the GPU.

Signed-off-by: Lyude <lyude at redhat.com>
---
 lib/igt_kms.c | 2 ++
 lib/igt_kms.h | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/igt_kms.c b/lib/igt_kms.c
index 7d906c2..f3927fc 100644
--- a/lib/igt_kms.c
+++ b/lib/igt_kms.c
@@ -1349,6 +1349,7 @@ void igt_display_init(igt_display_t *display, int drm_fd)
 	 * hardware and cannot change of time (for now, at least).
 	 */
 	display->n_pipes = resources->count_crtcs;
+	display->pipes = calloc(sizeof(igt_pipe_t), display->n_pipes);
 
 	drmSetClientCap(drm_fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1);
 	is_atomic = drmSetClientCap(drm_fd, DRM_CLIENT_CAP_ATOMIC, 1);
@@ -1561,6 +1562,7 @@ void igt_display_fini(igt_display_t *display)
 	for (i = 0; i < display->n_outputs; i++)
 		igt_output_fini(&display->outputs[i]);
 	free(display->outputs);
+	free(display->pipes);
 	display->outputs = NULL;
 }
 
diff --git a/lib/igt_kms.h b/lib/igt_kms.h
index dadbcdd..bb36424 100644
--- a/lib/igt_kms.h
+++ b/lib/igt_kms.h
@@ -310,7 +310,7 @@ struct igt_display {
 	int n_outputs;
 	unsigned long pipes_in_use;
 	igt_output_t *outputs;
-	igt_pipe_t pipes[I915_MAX_PIPES];
+	igt_pipe_t *pipes;
 	bool has_cursor_plane;
 	bool is_atomic;
 };
-- 
2.9.3