On Fri, May 24, 2024 at 01:07:18AM +0000, Lin Gui (桂林) wrote: > Dear @Greg KH<mailto:gregkh@xxxxxxxxxxxxxxxxxxx>, > > Base : kernel-5.15.159 > > diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c > index a569066..d656964 100644 > --- a/drivers/mmc/core/mmc.c > +++ b/drivers/mmc/core/mmc.c > @@ -1800,7 +1800,13 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, > if (err) > goto free_card; > > - } else if (!mmc_card_hs400es(card)) { > + } else if (mmc_card_hs400es(card)){ > + if (host->ops->execute_hs400_tuning) { > + err = host->ops->execute_hs400_tuning(host, card); > + if (err) > + goto free_card; > + } > + } else { > /* Select the desired bus width optionally */ > err = mmc_select_bus_width(card); > if (err > 0 && mmc_card_hs(card)) { > Also, please read: https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html for how to do this properly.
