Re: 回复: 回复: 回复: backport a patch for Linux kernel-5.15 kernel-6.1 kenrel-6.6 stable tree

[Greg KH <gregkh@linuxfoundation.org>]

On Fri, May 24, 2024 at 01:07:18AM +0000, Lin Gui (桂林) wrote:
> Dear @Greg KH<mailto:gregkh@linuxfoundation.org>,
> 
> 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)) {
> 

The patch is corrupted, and sent in html format.

But most importantly, you did not test this to verify it works at all,
which means that you don't really need it?

confused,

greg k-h