From f45fd10c7bacf2ec2483509356093d90d0cd2bc8 Mon Sep 17 00:00:00 2001

From: Thomas Zimmermann <tzimmermann@suse.de>

Date: Fri, 10 Jun 2022 11:36:52 +0200

Subject: [PATCH] Add parameter to disable simple-framebuffer devices

Patch-mainline: Never, temporary workaround for simpledrm bugs

References: boo#1193472

Temporary workaround for systems that break with simpledrm. Use

'nosimplefb' to go back to the old setup with efifb/vesafb.

Remaining bugs will get fixed, but in the meantime, we cannot leave

users without display output in any case.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Acked-by: Thomas Zimmermann <tzimmermann@suse.de>

---

 drivers/firmware/sysfb.c | 6 ++++++

 1 file changed, 6 insertions(+)

diff --git a/drivers/firmware/sysfb.c b/drivers/firmware/sysfb.c

index a504f7234f352..940c9d6d530ca 100644

--- a/drivers/firmware/sysfb.c

+++ b/drivers/firmware/sysfb.c

@@ -50,6 +50,12 @@ static int __init simpledrm_disable(char *opt)

 }

 early_param("nvidia-drm.modeset", simpledrm_disable);

+static int __init simpledrm_disable_nosimplefb(char *opt)

+{

+	return simpledrm_disable(opt);

+}

+early_param("nosimplefb", simpledrm_disable_nosimplefb);

+

 static __init int sysfb_init(void)

 {

 	struct screen_info *si = &screen_info;

-- 

2.36.1