On Sat, Nov 25, 2017 at 01:24:54AM +0900, Masahiro Yamada wrote:
> The register region is ioremap'ed in the tmio_mmc_host_probe(), i.e.
> drivers cannot get access to the hardware before mmc_add_host().
> 
> Actually, renesas_sdhi_core.c reads out the CTL_VERSION register to
> complete the platform-specific settings.  However, at this point,
> the MMC host is already running.
> 
> Move the register ioremap to tmio_mmc_host_alloc() so that drivers
> can perform platform-specific settings between tmio_mmc_host_alloc()
> and tmio_mmc_host_probe().
> 
> I changed tmio_mmc_host_alloc() to return an error pointer to
> propagate the return code from devm_ioremap_resource().
> 
> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
> ---

Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>