[PATCH 02/25] drm/fb_helper: Create a wrapper for unlink_framebuffer

[Archit Taneja <architt@codeaurora.org>]

Some drm drivers call unlink_framebuffer. Create a drm_fb_helper function
that wraps around these calls.

This is part of an effort to prevent drm drivers from calling fbdev
functions directly, in order to make fbdev emulation a top level drm
option.

Signed-off-by: Archit Taneja <architt@codeaurora.org>
---
 drivers/gpu/drm/drm_fb_helper.c | 7 +++++++
 include/drm/drm_fb_helper.h     | 2 ++
 2 files changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 78859ad..742377d 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -737,6 +737,13 @@ void drm_fb_helper_fini(struct drm_fb_helper *fb_helper)
 }
 EXPORT_SYMBOL(drm_fb_helper_fini);
 
+void drm_fb_helper_unlink_fbi(struct drm_fb_helper *fb_helper)
+{
+	if (fb_helper->fbdev)
+		unlink_framebuffer(fb_helper->fbdev);
+}
+EXPORT_SYMBOL(drm_fb_helper_unlink_fbi);
+
 static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green,
 		     u16 blue, u16 regno, struct fb_info *info)
 {
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index 2ee4ec5..4c90837 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -145,6 +145,8 @@ void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helpe
 void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
 			    uint32_t depth);
 
+void drm_fb_helper_unlink_fbi(struct drm_fb_helper *fb_helper);
+
 int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
 
 int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);
-- 
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