In commit 3f6ae7b19 ("igt/kms_frontbuffer_tracking: Keep the debugfs
dir around") we introduced custom variant of __igt_debugfs_read function
that fires assert when debugfs returns an error. Replace that assert
with proper error handling to allow use of errors like -ENODEV.
v2: allow only -ENODEV (Chris)
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
tests/kms_frontbuffer_tracking.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/tests/kms_frontbuffer_tracking.c b/tests/kms_frontbuffer_tracking.c
index a068c8a..c6586c4 100644
--- a/tests/kms_frontbuffer_tracking.c
+++ b/tests/kms_frontbuffer_tracking.c
@@ -783,7 +783,10 @@ static bool set_mode_for_params(struct modeset_params *params)
static void __debugfs_read(const char *param, char *buf, int len)
{
len = igt_sysfs_read(drm.debugfs, param, buf, len - 1);
- igt_assert(len > 0);
+ if (len < 0) {
+ igt_assert_eq(len, -ENODEV);
+ len = 0;
+ }
buf[len] = '\0';
}
--
2.7.4
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