[PATCH] media: mediatek: vcodec: avoid -Wcast-function-type-strict warning

[Arnd Bergmann]

On Tue, Feb 27, 2024, at 12:38, Ricardo Ribalda Delgado wrote:
> On Sat, Feb 24, 2024 at 1:11 PM Arnd Bergmann <arnd at kernel.org> wrote:
>>
>> From: Arnd Bergmann <arnd at arndb.de>
>>
>> The ipi handler here tries hard to maintain const-ness of its argument,
>> but by doing that causes a warning about function type casts:
>
> I worked on the same issue, but in instead of removing the const, I
> tried to constify everything:
> https://patchwork.linuxtv.org/project/linux-media/patch/20240226-fix-clang-warnings-v2-3-fa1bc931d17e@chromium.org/

I had almost the same patch originally but ended up not sending
it because I could not figure out what to do about

typedef int (*rpmsg_rx_cb_t)(struct rpmsg_device *, void *, int, void *, u32);

which is a generic part of rpmsg that takes a non-const pointer
and gets called by mtk_rpmsg_ipi_handler(), which would now
get a const pointer.

     Arnd