For the fbdev api if the struct fb_var_screeninfo accel_flags field is set to FB_ACCELF_TEXT then userland applications can not mmap the mmio region. Since it is a bad idea for DRM drivers to expose the mmio region via the fbdev layer we always set the accel_flags to prevent this. Please apply.
Signed-off-by: James Simmons jsimmons@infradead.org ---
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index d2849e4..aa37711 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -985,6 +985,8 @@ void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, info->fix.type = FB_TYPE_PACKED_PIXELS; info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR; + info->fix.mmio_start = 0; + info->fix.mmio_len = 0; info->fix.type_aux = 0; info->fix.xpanstep = 1; /* doing it in hw */ info->fix.ypanstep = 1; /* doing it in hw */ @@ -1005,6 +1007,7 @@ void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helpe info->var.xres_virtual = fb->width; info->var.yres_virtual = fb->height; info->var.bits_per_pixel = fb->bits_per_pixel; + info->var.accel_flags = FB_ACCELF_TEXT; info->var.xoffset = 0; info->var.yoffset = 0; info->var.activate = FB_ACTIVATE_NOW; diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c index af2a1dd..ced3eef 100644 --- a/drivers/gpu/drm/i915/intel_fb.c +++ b/drivers/gpu/drm/i915/intel_fb.c @@ -68,7 +68,7 @@ static int intelfb_create(struct intel_fbdev *ifbdev, struct drm_gem_object *fbo = NULL; struct drm_i915_gem_object *obj_priv; struct device *device = &dev->pdev->dev; - int size, ret, mmio_bar = IS_GEN2(dev) ? 1 : 0; + int size, ret;
/* we don't do packed 24bpp */ if (sizes->surface_bpp == 24) @@ -156,10 +156,6 @@ static int intelfb_create(struct intel_fbdev *ifbdev, drm_fb_helper_fill_fix(info, fb->pitch, fb->depth); drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
- /* FIXME: we really shouldn't expose mmio space at all */ - info->fix.mmio_start = pci_resource_start(dev->pdev, mmio_bar); - info->fix.mmio_len = pci_resource_len(dev->pdev, mmio_bar); - info->pixmap.size = 64*1024; info->pixmap.buf_align = 8; info->pixmap.access_align = 32; diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c index ea861c9..9dbe1ef 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c +++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c @@ -348,10 +348,6 @@ nouveau_fbcon_create(struct nouveau_fbdev *nfbdev, drm_fb_helper_fill_fix(info, fb->pitch, fb->depth); drm_fb_helper_fill_var(info, &nfbdev->helper, sizes->fb_width, sizes->fb_height);
- /* FIXME: we really shouldn't expose mmio space at all */ - info->fix.mmio_start = pci_resource_start(pdev, 1); - info->fix.mmio_len = pci_resource_len(pdev, 1); - /* Set aperture base/size for vesafb takeover */ info->apertures = dev_priv->apertures; if (!info->apertures) { diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c index efa2118..f7b4762 100644 --- a/drivers/gpu/drm/radeon/radeon_fb.c +++ b/drivers/gpu/drm/radeon/radeon_fb.c @@ -247,8 +247,6 @@ static int radeonfb_create(struct radeon_fbdev *rfbdev, info->apertures->ranges[0].base = rdev->ddev->mode_config.fb_base; info->apertures->ranges[0].size = rdev->mc.real_vram_size;
- info->fix.mmio_start = 0; - info->fix.mmio_len = 0; info->pixmap.size = 64*1024; info->pixmap.buf_align = 8; info->pixmap.access_align = 32; diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c index 41d9a5b..dd596f2 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c @@ -480,9 +480,6 @@ int vmw_fb_init(struct vmw_private *vmw_priv) info->fix.smem_start = 0; info->fix.smem_len = fb_size;
- info->fix.mmio_start = 0; - info->fix.mmio_len = 0; - info->pseudo_palette = par->pseudo_palette; info->screen_base = par->vmalloc; info->screen_size = fb_size;