Re: [PATCH 2/6] mmc: sdhci: add __sdhci_execute_tuning() to header

Xi Ruoyao
2023-09-25T10:23:26Z

On Mon, 2023-09-25 at 13:21 +0300, Adrian Hunter wrote:
> On 22/09/23 04:49, Drew Fustini wrote:
> > 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 | 2 +-
> >  drivers/mmc/host/sdhci.h | 1 +
> >  2 files changed, 2 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
> > index ff41aa56564e..fd607058d176 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)
>
> Also need
> EXPORT_SYMBOL_GPL(__sdhci_execute_tuning);
>
> >  {
> >   int i;

By the way should we rename this function? I think
"__sdhci_execute_tuning" vs "sdhci_execute_tuning" might be confusing
when we export both.

--
Xi Ruoyao <xry111@xry111.site>
School of Aerospace Science and Technology, Xidian University