Re: [PATCH] staging: sm750fb: fix division by zero in ps_to_hz()

[Dan Carpenter]

On Mon, Mar 23, 2026 at 03:31:56PM +0800, Junrui Luo wrote:
> ps_to_hz() is called from hw_sm750_crtc_set_mode() without validating
> that pixclock is non-zero. A zero pixclock passed via FBIOPUT_VSCREENINFO
> causes a division by zero.
> 
> Fix by rejecting zero pixclock in lynxfb_ops_check_var(), consistent
> with other framebuffer drivers.
> 
> Fixes: 81dee67e215b ("staging: sm750fb: add sm750 to staging")
> Reported-by: Yuhao Jiang <danisjiang@xxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Junrui Luo <moonafterrain@xxxxxxxxxxx>
> ---

Seems reasonable.

There is no Closes tag.  Could we get some more information about how
this was found and tested?

regards,
dan carpenter