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If the tmio device is attached to a genpd (PM domain), that genpd may have ->start|stop() callback assigned to it. To make sure the device is accessible during ->probe(), genpd's ->start() callback must be invoked, which is currently managed by tmio_mmc_host_probe(). However, it's likely that may be too late for some cases, as registers may be read and written way before that point. To fix the behaviour, let's move the call to dev_pm_domain_start() from tmio_mmc_host_probe() into those clients that needs it. From discussions at linux-mmc mailing list, it turned out that it should be sufficient to do this for the SDHI renesas variants, hence the call is move to renesas_sdhi_probe(). Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Link: https://lore.kernel.org/r/20200519152445.6922-1-ulf.hansson@linaro.org Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> |
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