On Fri, Mar 21, 2014 at 09:08:44PM +0000, Rob Herring wrote:
> diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c
> new file mode 100644
> index 0000000..241757a
> --- /dev/null
> +++ b/drivers/tty/serial/earlycon.c
[...]
> +static void __iomem * __init earlycon_map(unsigned long paddr, size_t size)
> +{
> + void __iomem *base;
> +#ifdef CONFIG_FIX_EARLYCON_MEM
> + set_fixmap_nocache(FIX_EARLYCON_MEM_BASE, paddr & PAGE_MASK);
> + base = (void __iomem *)__fix_to_virt(FIX_EARLYCON_MEM_BASE);
> + base += paddr & ~PAGE_MASK;
> +#else
> + base = ioremap_nocache(paddr, size);
> +#endif
Just curious why not set_fixmap_io (and plain ioremap)?
> +static int __init parse_options(struct earlycon_device *device,
> + char *options)
> +{
[...]
> + if (port->mapbase)
> + port->membase = earlycon_map(port->mapbase, 64);
I would move the earlycon_map() call in setup_earlycon() (personal
preference, parse_options() implies just parsing the options rather than
having additional side-effects).
--
Catalin
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