diff options
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/drm_fb_helper.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 95f389433c4a..105d9c8fe325 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -74,7 +74,7 @@ MODULE_PARM_DESC(drm_fbdev_overalloc, * considered as a broken and legacy behaviour from a modern fbdev device. */ #if IS_ENABLED(CONFIG_DRM_FBDEV_LEAK_PHYS_SMEM) -static bool drm_leak_fbdev_smem = false; +static bool drm_leak_fbdev_smem; module_param_unsafe(drm_leak_fbdev_smem, bool, 0600); MODULE_PARM_DESC(drm_leak_fbdev_smem, "Allow unsafe leaking fbdev physical smem address [default=false]"); @@ -1968,6 +1968,10 @@ static int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, sizes.surface_height = config->max_height; } +#if IS_ENABLED(CONFIG_DRM_FBDEV_LEAK_PHYS_SMEM) + fb_helper->hint_leak_smem_start = drm_leak_fbdev_smem; +#endif + /* push down into drivers */ ret = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); if (ret < 0) @@ -2165,7 +2169,7 @@ __drm_fb_helper_initial_config_and_unlock(struct drm_fb_helper *fb_helper, info->var.pixclock = 0; /* Shamelessly allow physical address leaking to userspace */ #if IS_ENABLED(CONFIG_DRM_FBDEV_LEAK_PHYS_SMEM) - if (!drm_leak_fbdev_smem) + if (!fb_helper->hint_leak_smem_start) #endif /* don't leak any physical addresses to userspace */ info->flags |= FBINFO_HIDE_SMEM_START; @@ -2564,7 +2568,7 @@ static int drm_fb_helper_generic_probe(struct drm_fb_helper *fb_helper, * case. */ #if IS_ENABLED(CONFIG_DRM_FBDEV_LEAK_PHYS_SMEM) - if (drm_leak_fbdev_smem && fbi->fix.smem_start == 0 && + if (fb_helper->hint_leak_smem_start && fbi->fix.smem_start == 0 && !drm_WARN_ON_ONCE(dev, map.is_iomem)) fbi->fix.smem_start = page_to_phys(virt_to_page(fbi->screen_buffer)); |