[igt-dev] [PATCH i-g-t] tests/kms_frontbuffer_tracking: Accept missing FBC debugfs files

[Petri Latvala]

On Wed, Nov 24, 2021 at 05:12:45PM +0200, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> With multiple FBC instances becoming a thing at some point
> the current plan is to go with separate debugfs files for
> each FBC instance. Which also means that if there is no
> FBC there will be no debugfs files either. Adapt the test
> to tolerate such conditions.
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
> ---
>  tests/i915/kms_frontbuffer_tracking.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tests/i915/kms_frontbuffer_tracking.c b/tests/i915/kms_frontbuffer_tracking.c
> index d6a884926c48..532bfbb9b481 100644
> --- a/tests/i915/kms_frontbuffer_tracking.c
> +++ b/tests/i915/kms_frontbuffer_tracking.c
> @@ -724,7 +724,7 @@ static void __debugfs_read(const char *param, char *buf, int len)
>  {
>  	len = igt_debugfs_simple_read(drm.debugfs, param, buf, len);
>  	if (len < 0)
> -		igt_assert_eq(len, -ENODEV);
> +		igt_assert(len == -ENOENT || len == -ENODEV);

If this fires, we now lose the information on what the error
was. Although we automatically print errno in that case, is the error
in there?

-- 
Petri Latvala


>  }
>  
>  static int __debugfs_write(const char *param, char *buf, int len)
> -- 
> 2.32.0
>