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    Subject[PATCH v2 2/7] mmc: sdhci: add __sdhci_execute_tuning() to header
    Expose __sdhci_execute_tuning() so that it can be called from the
    mmc host controller drivers.

    In the sdhci-of-dwcmshc driver, sdhci_dwcmshc_th1520_ops sets
    platform_execute_tuning to th1520_execute_tuning(). That function has
    to manipulate phy registers before tuning can be performed. To avoid
    copying the code verbatim from __sdhci_execute_tuning() into
    th1520_execute_tuning(), make it possible for __sdhci_execute_tuning()
    to be called from sdhci-of-dwcmshc.

    Signed-off-by: Drew Fustini <dfustini@baylibre.com>
    ---
    drivers/mmc/host/sdhci.c | 3 ++-
    drivers/mmc/host/sdhci.h | 1 +
    2 files changed, 3 insertions(+), 1 deletion(-)

    diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
    index ff41aa56564e..c79f73459915 100644
    --- a/drivers/mmc/host/sdhci.c
    +++ b/drivers/mmc/host/sdhci.c
    @@ -2841,7 +2841,7 @@ void sdhci_send_tuning(struct sdhci_host *host, u32 opcode)
    }
    EXPORT_SYMBOL_GPL(sdhci_send_tuning);

    -static int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode)
    +int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode)
    {
    int i;

    @@ -2879,6 +2879,7 @@ static int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode)
    sdhci_reset_tuning(host);
    return -EAGAIN;
    }
    +EXPORT_SYMBOL_GPL(__sdhci_execute_tuning);

    int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
    {
    diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
    index f219bdea8f28..a20864fc0641 100644
    --- a/drivers/mmc/host/sdhci.h
    +++ b/drivers/mmc/host/sdhci.h
    @@ -793,6 +793,7 @@ void sdhci_set_bus_width(struct sdhci_host *host, int width);
    void sdhci_reset(struct sdhci_host *host, u8 mask);
    void sdhci_set_uhs_signaling(struct sdhci_host *host, unsigned timing);
    int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode);
    +int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode);
    void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios);
    int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
    struct mmc_ios *ios);
    --
    2.34.1

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