Re: [PATCH] video: ARM CLCD: export symbols for driver module

[Linus Walleij]

On Fri, Aug 26, 2016 at 5:34 PM, Arnd Bergmann <arnd@xxxxxxxx> wrote:

> The amba-clcd-versatile.c code is always built-in and has to
> be done that way because it gets called by platform code that is
> also built-in. However, it now also gets called from the
> core CLCD driver through the .init_panel callback function,
> which leads to a build error when the framebuffer is configured
> as a loadable module:
>
> ERROR: "versatile_clcd_init_panel" [drivers/video/fbdev/amba-clcd-mod.ko] undefined!
>
> The same thing happens for the nomadik driver, although that
> could be linked into the core module if we want to:
>
> ERROR: "nomadik_clcd_init_panel" [drivers/video/fbdev/amba-clcd.ko] undefined!
> ERROR: "nomadik_clcd_init_board" [drivers/video/fbdev/amba-clcd.ko] undefined!
>
> For consistency, I'm taking the same approach in both cases here
> and just export the functions to make them usable by the driver.
>
> Alternatively, we could split out the CONFIG_OF-code from amba-clcd-versatile.c
> into a new file and link those two together with the core driver as one
> module.
>
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> Fixes: 1d3f0cbe0d3a ("video: ARM CLCD: add special board and panel hooks for Nomadik")
> Fixes: 25348160e9a4 ("video: ARM CLCD: add special panel hook for Versatiles")

Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>

Yours,
Linus Walleij