linux-kernel - Re: [PATCH 2/2] firmware: arm_scmi: add missing spinlock documentation

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: <20250902-daft-pompous-angelfish-459c6e@sudeepholla>
Date: Tue, 2 Sep 2025 10:27:11 +0100
From: Sudeep Holla <sudeep.holla@....com>
To: Artem Shimko <artyom.shimko@...il.com>
Cc: Cristian Marussi <cristian.marussi@....com>, arm-scmi@...r.kernel.org,
	Sudeep Holla <sudeep.holla@....com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] firmware: arm_scmi: add missing spinlock
 documentation

On Mon, Sep 01, 2025 at 07:12:04PM +0300, Artem Shimko wrote:
> Adds a missing comment for xfer_lock spinlock in struct scmi_xfers_info.
> The spinlock protects access to the xfer buffers and transfer allocation
> mechanism, preventing race conditions in concurrent access scenarios.
> 
> Signed-off-by: Artem Shimko <artyom.shimko@...il.com>
> ---
>  drivers/firmware/arm_scmi/driver.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
> index bd56a877fdfc..6828392152f4 100644
> --- a/drivers/firmware/arm_scmi/driver.c
> +++ b/drivers/firmware/arm_scmi/driver.c
> @@ -76,6 +76,7 @@ static struct dentry *scmi_top_dentry;
>   */
>  struct scmi_xfers_info {
>  	unsigned long *xfer_alloc_table;
> +	/* Protects access to the xfer buffers */

Thanks for your patch but this is quite obvious and I see no point in
just adding this comment.

-- 
Regards,
Sudeep