Re: [Intel-gfx] [PATCH v3 4/4] drm/i915/fbc: Register per-crtc debugfs files

[Nathan Chancellor <nathan@kernel.org>]

Hi Ville,

On Mon, Dec 13, 2021 at 05:14:35PM +0200, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
> 
> Expose FBC debugfs files for each crtc. These may or may not point
> to the same FBC instance depending on the platform.
> 
> We leave the old global debugfs files in place until
> igt catches up to the new per-crtc approach.
> 
> v2: Take a trip via intel_crtc_debugfs_add() (Jani)
> 
> Cc: Jani Nikula <jani.nikula@intel.com>
> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

Apologies if this has already been reported and fixed, I have not seen
anything on lore.kernel.org or drm-intel about it.

This patch as commit e74c6aa955ca ("drm/i915/fbc: Register per-crtc
debugfs files") breaks the build when CONFIG_DEBUG_FS is disabled.

drivers/gpu/drm/i915/display/intel_fbc.c: In function ‘intel_fbc_crtc_debugfs_add’:
drivers/gpu/drm/i915/display/intel_fbc.c:1817:61: error: ‘struct drm_crtc’ has no member named ‘debugfs_entry’
 1817 |                 intel_fbc_debugfs_add(plane->fbc, crtc->base.debugfs_entry);
      |                                                             ^

Cheers,
Nathan