On Friday 28 September 2007, Grant Likely wrote:
> +static void uartlite_putc(unsigned char c)
> +{
> + while ((in_be32(reg_base + 0x8) & 0x08) != 0); /* spin */
> + out_be32(reg_base + 0x4, c);
> +}
When coding a spin-loop, it's better to do a cpu_relax() between
each attempt.
Arnd <><
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