From: Mark Cave-Ayland 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 Link: http://patchwork.freedesktop.org/patch/msgid/1499032363-8290-1-git-send-email-mark.cave-ayland@ilande.co.uk Signed-off-by: Gerd Hoffmann Acked-by: Petr Tesarik --- 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, };