firmware: sysfb: Add sysfb_disable() helper function

[ Upstream commit bde376e9de ] This can be used by subsystems to unregister a platform device registered by sysfb and also to disable future platform device registration in sysfb. Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20220607182338.344270-3-javierm@redhat.com Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-06-07 20:23:35 +02:00
parent 2ef4c6d66f
commit b952569e03
3 changed files with 66 additions and 6 deletions
@@ -55,6 +55,18 @@ struct efifb_dmi_info {
 	int flags;
 };

+#ifdef CONFIG_SYSFB
+
+void sysfb_disable(void);
+
+#else /* CONFIG_SYSFB */
+
+static inline void sysfb_disable(void)
+{
+}
+
+#endif /* CONFIG_SYSFB */
+
 #ifdef CONFIG_EFI

 extern struct efifb_dmi_info efifb_dmi_list[];