Re: [PATCH v1 2/3] xen/arm: Add new driver for R-Car Gen2 UART

[Julien Grall <julien.grall@linaro.org>]

Hi Iurii,

On 16/01/15 12:50, Iurii Konovalenko wrote:
> +static int __init rcar2_uart_init(struct dt_device_node *dev,
> +                                 const void *data)
> +{
> +    const char *config = data;
> +    struct rcar2_uart *uart;
> +    int res;
> +    u64 addr, size;
> +
> +    if ( strcmp(config, "") )
> +        printk("WARNING: UART configuration is not supported\n");
> +
> +    uart = &rcar2_com;
> +
> +    uart->clock_hz  = SCIF_CLK_FREQ;
> +    uart->baud      = BAUD_AUTO;
> +    uart->data_bits = 8;
> +    uart->parity    = PARITY_NONE;
> +    uart->stop_bits = 1;
> +
> +    res = dt_device_get_address(dev, 0, &addr, &size);
> +    if ( res )
> +    {
> +        printk("rcar2-uart: Unable to retrieve the base"
> +                     " address of the UART\n");
> +        return res;
> +    }
> +
> +    uart->regs = ioremap_attr(addr, size, PAGE_HYPERVISOR_NOCACHE);

Please use ioremap_nocache

-- 
Julien Grall