# \[PATCH 03/29\] acornfb: use display information in info not in var for panning - Subsystems: FRAMEBUFFER LAYER, THE REST - Maintainers: Helge Deller, Linus Torvalds - List: linux-fbdev - 1 message, 1 author - Page: https://ratatoskr.run/linux-fbdev/2011/05/13461397/t ## \[PATCH 03/29\] acornfb: use display information in info not in var for panning - From: Laurent Pinchart \ - Date: 2011-05-25 22:57:55 - Message: https://ratatoskr.run/linux-fbdev/2011/05/13461397.md ```text We must not use any information in the passed var besides xoffset, yoffset and vmode as otherwise applications might abuse it. Signed-off-by: Laurent Pinchart --- drivers/video/acornfb.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/video/acornfb.c b/drivers/video/acornfb.c index 3bacc12..b303f17 100644 --- a/drivers/video/acornfb.c +++ b/drivers/video/acornfb.c @@ -850,9 +850,9 @@ acornfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) u_int y_bottom = var->yoffset; if (!(var->vmode & FB_VMODE_YWRAP)) - y_bottom += var->yres; + y_bottom += info->var.yres; - if (y_bottom > var->yres_virtual) + if (y_bottom > info->var.yres_virtual) return -EINVAL; acornfb_update_dma(info, var); -- 1.7.3.4 ```