linux-kernel - Re: [PATCH 2/2] mmc : fix for check cqe halt.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <87zfoxqhsj.fsf@gmail.com>
Date: Wed, 28 Aug 2024 12:02:12 +0530
From: Ritesh Harjani <ritesh.list@...il.com>
To: Seunghwan Baek <sh8267.baek@...sung.com>, linux-kernel@...r.kernel.org, linux-mmc@...r.kernel.org, ulf.hansson@...aro.org, quic_asutoshd@...cinc.com, adrian.hunter@...el.com
Cc: 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, sh8267.baek@...sung.com, wkon.kim@...sung.com
Subject: Re: [PATCH 2/2] mmc : fix for check cqe halt.

Seunghwan Baek <sh8267.baek@...sung.com> writes:

> Code to check whether cqe is in halt state is modified to cqhci_halted,
> which has already been implemented.
>
> Fixes: a4080225f51d ("mmc: cqhci: support for command queue enabled host")

Few obsevations/corrections - 
1. This is not a fix patch. So don't add "Fixes" tag
2. Commit subject needs correction... maybe- "cqhci-core: Make use cqhci_halted() routine"
3. This fix tag should be added to your previous patch which fixes a
bug. I later noticed that the tag mentioned in previous patch is incorrect.
4. The commit subject says [PATCH 2/2], but the mails were not linked properly, I guess.

> Signed-off-by: Seunghwan Baek <sh8267.baek@...sung.com>
> ---
>  drivers/mmc/host/cqhci-core.c | 14 +++++++-------
>  1 file changed, 7 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/mmc/host/cqhci-core.c b/drivers/mmc/host/cqhci-core.c
> index a02da26a1efd..178277d90c31 100644
> --- a/drivers/mmc/host/cqhci-core.c
> +++ b/drivers/mmc/host/cqhci-core.c
> @@ -33,6 +33,11 @@ struct cqhci_slot {
>  #define CQHCI_HOST_OTHER	BIT(4)
>  };
>  
> +static bool cqhci_halted(struct cqhci_host *cq_host)
> +{
> +	return cqhci_readl(cq_host, CQHCI_CTL) & CQHCI_HALT;
> +}
> +
>  static inline u8 *get_desc(struct cqhci_host *cq_host, u8 tag)
>  {
>  	return cq_host->desc_base + (tag * cq_host->slot_sz);
> @@ -282,7 +287,7 @@ 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 +622,7 @@ 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));
>  		}
> @@ -953,11 +958,6 @@ static bool cqhci_clear_all_tasks(struct mmc_host *mmc, unsigned int timeout)
>  	return ret;
>  }
>  
> -static bool cqhci_halted(struct cqhci_host *cq_host)
> -{
> -	return cqhci_readl(cq_host, CQHCI_CTL) & CQHCI_HALT;
> -}
> -
>  static bool cqhci_halt(struct mmc_host *mmc, unsigned int timeout)
>  {
>  	struct cqhci_host *cq_host = mmc->cqe_private;
> -- 
> 2.17.1

-ritesh