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@xxxxxxxxxxxxx> > --- Reviewed-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
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