The introduction of: drm/framebuffer: Add framebuffer debugfs file
broke vgem. That patch assumed that all drivers had initialized the
dev->mode_config.fb_lock mutex which happens in drm_mode_config_init().
vgem doesn't need to call drm_mode_config_init().
Fix this by only creating the framebuffer debugfs file for modesetting
drivers.
Fixes: 45d58b40292b ("drm/framebuffer: Add framebuffer debugfs file")
Suggested-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Noralf Trønnes <noralf@xxxxxxxxxxx>
---
drivers/gpu/drm/drm_debugfs.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 550f29de6c1f..b2482818fee8 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -158,10 +158,12 @@ int drm_debugfs_init(struct drm_minor *minor, int minor_id,
}
}
- ret = drm_framebuffer_debugfs_init(minor);
- if (ret) {
- DRM_ERROR("Failed to create framebuffer debugfs file\n");
- return ret;
+ if (drm_core_check_feature(dev, DRIVER_MODESET)) {
+ ret = drm_framebuffer_debugfs_init(minor);
+ if (ret) {
+ DRM_ERROR("Failed to create framebuffer debugfs file\n");
+ return ret;
+ }
}
if (dev->driver->debugfs_init) {
--
2.14.2
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