Make sure that virtual screen size is not less than physical screen one. Reviewed-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> Signed-off-by: Andrey Strachuk <strochuk@xxxxxxxxx> --- drivers/gpu/drm/drm_fb_helper.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 2d4cee6a10ff..ea07c97bc5a9 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -1355,6 +1355,12 @@ int drm_fb_helper_check_var(struct fb_var_screeninfo *var, (drm_format_info_block_height(fb->format, 0) > 1)) return -EINVAL; + /* make sure that virtual resolution >= physical resolution */ + if (var->xres_virtual < var->xres) + var->xres_virtual = var->xres; + if (var->yres_virtual < var->yres) + var->yres_virtual = var->yres; + /* * Changes struct fb_var_screeninfo are currently not pushed back * to KMS, hence fail if different settings are requested. -- 2.25.1
