[PATCH] drm/i915/fbdev: fix link failure without FBDEV emulation

Arnd Bergmann
2026-03-04T08:37:10Z

From: Arnd Bergmann <arnd@arndb.de>

If CONFIG_DRM_FBDEV_EMULATION is disabled but CONFIG_FRAMEBUFFER_CONSOLE
is turned on, the i915 driver now fails to link:

ERROR: modpost: "intel_fbdev_fb_prefer_stolen" [drivers/gpu/drm/i915/i915.ko] undefined!

Fix the contition to include a check for the symbol that controls compilation
of intel_fbdev_fb.c.

Fixes: 94c7d2861292 ("drm/i915/fbdev: Extract intel_fbdev_fb_prefer_stolen()")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/gpu/drm/i915/i915_initial_plane.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_initial_plane.c b/drivers/gpu/drm/i915/i915_initial_plane.c
index 5594548f51d8..390a9248d631 100644
--- a/drivers/gpu/drm/i915/i915_initial_plane.c
+++ b/drivers/gpu/drm/i915/i915_initial_plane.c
@@ -115,7 +115,8 @@ initial_plane_vma(struct drm_i915_private *i915,
* important and we should probably use that space with FBC or other
* features.
*/
- if (IS_ENABLED(CONFIG_FRAMEBUFFER_CONSOLE) &&
+ if (IS_ENABLED(CONFIG_DRM_FBDEV_EMULATION) &&
+ IS_ENABLED(CONFIG_FRAMEBUFFER_CONSOLE) &&
mem == i915->mm.stolen_region &&
!intel_fbdev_fb_prefer_stolen(&i915->drm, size)) {
drm_dbg_kms(&i915->drm, "Initial FB size exceeds half of stolen, discarding\n");
--
2.39.5