Re: [PATCH] fbdev: udlfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO

Helge Deller
2026-04-10T14:55:59Z

On 4/9/26 15:23, Greg Kroah-Hartman wrote:
> Much like commit 19f953e74356 ("fbdev: fb_pm2fb: Avoid potential divide
> by zero error"), we also need to prevent that same crash from happening
> in the udlfb driver as it uses pixclock directly when dividing, which
> will crash.
>
> Cc: Bernie Thompson <bernie@plugable.com>
> Cc: Helge Deller <deller@gmx.de>
> Fixes: 59277b679f8b ("Staging: udlfb: add dynamic modeset support")
> Assisted-by: gregkh_clanker_t1000
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> ---
> drivers/video/fbdev/udlfb.c | 3 +++
> 1 file changed, 3 insertions(+)applied.

applied.

Thanks!
Helge