From: Gerd Hoffmann <kraxel@redhat.com>
Date: Fri, 1 Mar 2019 09:25:00 +0000 (+0100)
Subject: drm/fb-helper: call vga_remove_vgacon automatically.
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=1c74ca7a1a9a;p=openwrt%2Fstaging%2Fblogic.git

drm/fb-helper: call vga_remove_vgacon automatically.

Add vga_remove_vgacon() call to
drm_fb_helper_remove_conflicting_pci_framebuffers().

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20190301092502.30948-3-kraxel@redhat.com
---

diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index bb9acea61369..286d58efed5d 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -36,6 +36,7 @@ struct drm_fb_helper;
 #include <drm/drm_crtc.h>
 #include <drm/drm_device.h>
 #include <linux/kgdb.h>
+#include <linux/vgaarb.h>
 
 enum mode_set_atomic {
 	LEAVE_ATOMIC_MODE_SET,
@@ -642,11 +643,18 @@ drm_fb_helper_remove_conflicting_pci_framebuffers(struct pci_dev *pdev,
 						  int resource_id,
 						  const char *name)
 {
+	int ret = 0;
+
+	/*
+	 * WARNING: Apparently we must kick fbdev drivers before vgacon,
+	 * otherwise the vga fbdev driver falls over.
+	 */
 #if IS_REACHABLE(CONFIG_FB)
-	return remove_conflicting_pci_framebuffers(pdev, resource_id, name);
-#else
-	return 0;
+	ret = remove_conflicting_pci_framebuffers(pdev, resource_id, name);
 #endif
+	if (ret == 0)
+		ret = vga_remove_vgacon(pdev);
+	return ret;
 }
 
 #endif