From: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Date: Sun, 2 Jul 2017 22:52:43 +0100
Subject: drm/bochs: switch fb_ops over to use drm_fb_helper_cfb helpers
Git-commit: 931e8c661a2d85e6bdfe145cfc52dffaf4a60516
Patch-mainline: v4.14-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

The current drm_fb_helper_sys helpers referenced in fb_ops assume that the
video memory is in system RAM. This is not the case for sparc which uses direct
physical memory accesses for IO memory and causes the bochs_drm module to panic
immediately upon startup as it tries to initialise the framebuffer.

Switching fb_ops over to use the drm_fb_helper_cfb helpers ensures that the
correct accesses are used on sparc, fixing the panic and allowing the
bochs_drm module to function under qemu-system-sparc64.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1499032363-8290-1-git-send-email-mark.cave-ayland@ilande.co.uk
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/bochs/bochs_fbdev.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/gpu/drm/bochs/bochs_fbdev.c
+++ b/drivers/gpu/drm/bochs/bochs_fbdev.c
@@ -23,9 +23,9 @@ static int bochsfb_mmap(struct fb_info *
 static struct fb_ops bochsfb_ops = {
 	.owner = THIS_MODULE,
 	DRM_FB_HELPER_DEFAULT_OPS,
-	.fb_fillrect = drm_fb_helper_sys_fillrect,
-	.fb_copyarea = drm_fb_helper_sys_copyarea,
-	.fb_imageblit = drm_fb_helper_sys_imageblit,
+	.fb_fillrect = drm_fb_helper_cfb_fillrect,
+	.fb_copyarea = drm_fb_helper_cfb_copyarea,
+	.fb_imageblit = drm_fb_helper_cfb_imageblit,
 	.fb_mmap = bochsfb_mmap,
 };