diff options
Diffstat (limited to 'drivers/gpu/drm/drm_fb_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_fb_helper.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index dd852a25d375..d3af098b0922 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -71,7 +71,7 @@ MODULE_PARM_DESC(drm_fbdev_overalloc, #if IS_ENABLED(CONFIG_DRM_FBDEV_LEAK_PHYS_SMEM) static bool drm_leak_fbdev_smem = false; module_param_unsafe(drm_leak_fbdev_smem, bool, 0600); -MODULE_PARM_DESC(fbdev_emulation, +MODULE_PARM_DESC(drm_leak_fbdev_smem, "Allow unsafe leaking fbdev physical smem address [default=false]"); #endif @@ -1635,6 +1635,10 @@ int drm_fb_helper_check_var(struct fb_var_screeninfo *var, if (var->pixclock != 0 || in_dbg_master()) return -EINVAL; + if ((drm_format_info_block_width(fb->format, 0) > 1) || + (drm_format_info_block_height(fb->format, 0) > 1)) + return -EINVAL; + /* * Changes struct fb_var_screeninfo are currently not pushed back * to KMS, hence fail if different settings are requested. @@ -1952,6 +1956,8 @@ void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helpe { struct drm_framebuffer *fb = fb_helper->fb; + WARN_ON((drm_format_info_block_width(fb->format, 0) > 1) || + (drm_format_info_block_height(fb->format, 0) > 1)); info->pseudo_palette = fb_helper->pseudo_palette; info->var.xres_virtual = fb->width; info->var.yres_virtual = fb->height; |