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Date: Fri, 24 May 2024 06:08:47 +0200
From: Greg KH <gregkh@linuxfoundation.org>
To: Lin Gui =?utf-8?B?KOahguaelyk=?= <Lin.Gui@mediatek.com>
Cc: "stable@vger.kernel.org" <stable@vger.kernel.org>,
	Yongdong Zhang =?utf-8?B?KOW8oOawuOS4nCk=?= <Yongdong.Zhang@mediatek.com>,
	Bo Ye =?utf-8?B?KOWPtuazoik=?= <Bo.Ye@mediatek.com>,
	Qilin Tan =?utf-8?B?KOiwrem6kum6nyk=?= <Qilin.Tan@mediatek.com>,
	Wenbin Mei =?utf-8?B?KOaiheaWh+W9rCk=?= <Wenbin.Mei@mediatek.com>,
	Mengqi Zhang =?utf-8?B?KOW8oOaipueQpik=?= <Mengqi.Zhang@mediatek.com>
Subject: Re: =?utf-8?B?5Zue5aSNOiDlm57lpI06IOWbng==?=
 =?utf-8?B?5aSNOiBiYWNrcG9ydCA=?= =?utf-8?Q?a?= patch for Linux kernel-5.15
 kernel-6.1 kenrel-6.6 stable tree
Message-ID: <2024052426-recognize-luxurious-bda8@gregkh>
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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)) {
> 

Also, please read:
    https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.