The virtual screen size can't be smaller than the physical screen size.
Based on the general rule that we round up user-provided input if
neccessary, adjust the virtual screen size as well if needed.
Signed-off-by: Helge Deller <del...@gmx.de>
Cc: sta...@vger.kernel.org # v5.4+
---
drivers/video/fbdev/core/fbmem.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
index afa2863670f3..e645b96d2700 100644
--- a/drivers/video/fbdev/core/fbmem.c
+++ b/drivers/video/fbdev/core/fbmem.c
@@ -1106,6 +1106,11 @@ static long do_fb_ioctl(struct fb_info *info, unsigned
int cmd,
return -EFAULT;
console_lock();
lock_fb_info(info);
+ /* adjust virtual screen size if user missed it */
+ if (var.xres_virtual < var.xres)
+ var.xres_virtual = var.xres;
+ if (var.yres_virtual < var.yres)
+ var.yres_virtual = var.yres;
ret = fb_set_var(info, &var);
if (!ret)
fbcon_update_vcs(info, var.activate & FB_ACTIVATE_ALL);
--
2.35.3
