linux-kernel - Re: [PATCH] mmc : fix for check cqe halt.

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Message-ID: <7f81eb0943674983f771bbb292e0566f@manjaro.org>
Date: Fri, 23 Aug 2024 09:22:03 +0200
From: Dragan Simic <dsimic@...jaro.org>
To: Seunghwan Baek <sh8267.baek@...sung.com>
Cc: linux-kernel@...r.kernel.org, linux-mmc@...r.kernel.org,
 ulf.hansson@...aro.org, ritesh.list@...il.com, grant.jung@...sung.com,
 jt77.jang@...sung.com, junwoo80.lee@...sung.com, dh0421.hwang@...sung.com,
 jangsub.yi@...sung.com, sh043.lee@...sung.com, cw9316.lee@...sung.com,
 wkon.kim@...sung.com
Subject: Re: [PATCH] mmc : fix for check cqe halt.

Hello Seunghwan,

On 2024-08-23 09:10, Seunghwan Baek wrote:
> To check if mmc cqe is in halt state, need to check
> set/clear of CQHCI_HALT bit. At this time, we need to
> check with &, not &&. Therefore, code to check whether
> cqe is in halt state is modified to cqhci_halted,
> which has already been implemented.
> 
> Signed-off-by: Seunghwan Baek <sh8267.baek@...sung.com>

Looking good to me, thanks for the patch.  I'd suggest that you
resend the patch with a proper "Fixes" tag, together with the
"Cc: stable@...r.kernel.org" tag.

Maybe also reflow the patch description a bit, to use the 78-column
width or so fully.

> ---
>  drivers/mmc/host/cqhci-core.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/mmc/host/cqhci-core.c 
> b/drivers/mmc/host/cqhci-core.c
> index c14d7251d0bb..3d5bcb92c78e 100644
> --- a/drivers/mmc/host/cqhci-core.c
> +++ b/drivers/mmc/host/cqhci-core.c
> @@ -282,7 +282,7 @@ static void __cqhci_enable(struct cqhci_host 
> *cq_host)
> 
>  	cqhci_writel(cq_host, cqcfg, CQHCI_CFG);
> 
> -	if (cqhci_readl(cq_host, CQHCI_CTL) & CQHCI_HALT)
> +	if (cqhci_halted(cq_host))
>  		cqhci_writel(cq_host, 0, CQHCI_CTL);
> 
>  	mmc->cqe_on = true;
> @@ -617,7 +617,7 @@ static int cqhci_request(struct mmc_host *mmc,
> struct mmc_request *mrq)
>  		cqhci_writel(cq_host, 0, CQHCI_CTL);
>  		mmc->cqe_on = true;
>  		pr_debug("%s: cqhci: CQE on\n", mmc_hostname(mmc));
> -		if (cqhci_readl(cq_host, CQHCI_CTL) && CQHCI_HALT) {
> +		if (cqhci_halted(cq_host)) {
>  			pr_err("%s: cqhci: CQE failed to exit halt state\n",
>  			       mmc_hostname(mmc));
>  		}