[PATCH] mmc: core: Modify the CMD1 transmission interval

["李晓洁 (Xiaojie Li/13233)" <xiaojie.li2@unisoc.com>]

> On Fri, Sep 11, 2026 at 4:45 AM 李晓洁 (Xiaojie Li/13233) <xiaojie.li2@unisoc.com> wrote:
>
>	No, that's the whole point. We don't want open coded polling loops, it's just a nightmare to maintain. Please try to extend the existing
>__mmc_poll_for_busy() instead.

Understood. I will stop looking into a dedicated function and focus on extending the existing __mmc_poll_for_busy() to support CMD1's specific requirements.

I will follow up with an update once the code is debugged.

Thank you for your advice and reply.

Best regards,
Xiaojie.Li

-----邮件原件-----
发件人: Ulf Hansson <ulf.hansson@oss.qualcomm.com> 
发送时间: 2026年9月11日 23:47
收件人: 李晓洁 (Xiaojie Li/13233) <xiaojie.li2@unisoc.com>
抄送: Ulf Hansson <ulfh@kernel.org>; linux-mmc@vger.kernel.org; linux-kernel@vger.kernel.org; 陈文超 (Wenchao Chen) <Wenchao.Chen@unisoc.com>; 张如泉 (Rain Zhang) <Rain.Zhang@unisoc.com>; 唐月林 (Yuelin Tang) <yuelin.tang@unisoc.com>; cixi.geng@linux.dev
主题: Re: [PATCH] mmc: core: Modify the CMD1 transmission interval


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On Fri, Sep 11, 2026 at 4:45 AM 李晓洁 (Xiaojie Li/13233) <xiaojie.li2@unisoc.com> wrote:
>
> Hi Uffe:
>         Thank you for your reply.
>         However, I noticed that __mmc_poll_for_busy() and mmc_poll_for_busy() are invoked either directly or indirectly by many other functions within the MMC driver.
> Modifying them directly could potentially introduce unintended side effects.
>
>         Would it be acceptable to implement a dedicated function specifically for CMD1? We could create a CMD1-specific variant based on the existing __mmc_poll_for_busy().
> This approach would significantly minimize the potential impact on the rest of the codebase.

No, that's the whole point. We don't want open coded polling loops, it's just a nightmare to maintain. Please try to extend the existing
__mmc_poll_for_busy() instead.

And next time, please don't top post.

[...]

Kind regards
Uffe