Hi Peter,
> -----Original Message-----
> From: Peter Suti <peter.s...@streamunlimited.com>
> Sent: Wednesday, July 27, 2022 3:36 PM
> To: Liu, Chuansheng <chuansheng....@intel.com>; dan.carpen...@oracle.com;
> Greg Kroah-Hartman <gre...@linuxfoundation.org>; Thomas Zimmermann
> <tzimmerm...@suse.de>; Javier Martinez Canillas <javi...@redhat.com>
> Cc: Peter Suti <peter.s...@streamunlimited.com>; dri-
> de...@lists.freedesktop.org; linux-fb...@vger.kernel.org; linux-
> stag...@lists.linux.dev; linux-ker...@vger.kernel.org
> Subject: [PATCH v3] staging: fbtft: core: set smem_len before
> fb_deferred_io_init call
>
> The fbtft_framebuffer_alloc() calls fb_deferred_io_init() before
> initializing info->fix.smem_len. It is set to zero by the
> framebuffer_alloc() function. It will trigger a WARN_ON() at the
> start of fb_deferred_io_init() and the function will not do anything.
Please show us the WARN_ON() call stack, then everything is clear. It is the
driver itself issue to be fixed.
I saw Thomas made such WARN_ON().
>
> Fixes: 856082f021a2 ("fbdev: defio: fix the pagelist corruption")
Don't agree with such description.
Best Regards
Chuansheng
