Re: [PATCH 18/26] m68k: rename __iounmap and mark it static

Geert Uytterhoeven
2019-08-19T09:00:24Z

Hi Christoph,

On Sat, Aug 17, 2019 at 9:49 AM Christoph Hellwig <hch@lst.de> wrote:
> m68k uses __iounmap as the name for an internal helper that is only
> used for some CPU types. Mark it static and give it a better name.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>

Thanks for your patch!

> --- a/arch/m68k/mm/kmap.c
> +++ b/arch/m68k/mm/kmap.c
> @@ -52,6 +52,7 @@ static inline void free_io_area(void *addr)
>
> #define IO_SIZE (256*1024)
>
> +static void __free_io_area(void *addr, unsigned long size);
> static struct vm_struct *iolist;
>
> static struct vm_struct *get_io_area(unsigned long size)
> @@ -90,7 +91,7 @@ static inline void free_io_area(void *addr)
> if (tmp->addr = addr) {
> *p = tmp->next;
> /* remove gap added in get_io_area() */
> - __iounmap(tmp->addr, tmp->size - IO_SIZE);
> + __free_io_area(tmp->addr, tmp->size - IO_SIZE);
> kfree(tmp);
> return;
> }
> @@ -249,12 +250,13 @@ void iounmap(void __iomem *addr)
> }
> EXPORT_SYMBOL(iounmap);
>
> +#ifndef CPU_M68040_OR_M68060_ONLY

Cant you move this block up, to avoid adding more #ifdef cluttery?
The rest looks good to me.

> /*
> - * __iounmap unmaps nearly everything, so be careful
> + * __free_io_area unmaps nearly everything, so be careful
> * Currently it doesn't free pointer/page tables anymore but this
> * wasn't used anyway and might be added later.
> */
> -void __iounmap(void *addr, unsigned long size)
> +static void __free_io_area(void *addr, unsigned long size)
> {
> unsigned long virtaddr = (unsigned long)addr;
> pgd_t *pgd_dir;
> @@ -297,6 +299,7 @@ void __iounmap(void *addr, unsigned long size)
>
> flush_tlb_all();
> }
> +#endif /* CPU_M68040_OR_M68060_ONLY */
>
> /*
> * Set new cache mode for some kernel address space.

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds