The TMIO core misses to call request_mem_region().
devm_ioremap_resource() takes care of it and makes the code cleaner.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
                _host->write16_hook = NULL;
 
        res_ctl = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       if (!res_ctl)
-               return -EINVAL;
+       _host->ctl = devm_ioremap_resource(&pdev->dev, res_ctl);
+       if (IS_ERR(_host->ctl))
+               return PTR_ERR(_host->ctl);
 
        ret = mmc_of_parse(mmc);
        if (ret < 0)
        if (ret < 0)
                return ret;
 
-       _host->ctl = devm_ioremap(&pdev->dev,
-                                 res_ctl->start, resource_size(res_ctl));
-       if (!_host->ctl)
-               return -ENOMEM;
-
        tmio_mmc_ops.card_busy = _host->card_busy;
        tmio_mmc_ops.start_signal_voltage_switch =
                _host->start_signal_voltage_switch;