linux-kernel - Re: [PATCH 2/2] ipmi: Consolidate the run to completion checking for xmit msgs lock

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Message-ID: <aXjOT9e11GSrMHiy@gmail.com>
Date: Tue, 27 Jan 2026 06:41:48 -0800
From: Breno Leitao <leitao@...ian.org>
To: Corey Minyard <corey@...yard.net>
Cc: Nathan Chancellor <nathan@...nel.org>, 
	Nick Desaulniers <nick.desaulniers+lkml@...il.com>, Bill Wendling <morbo@...gle.com>, 
	Justin Stitt <justinstitt@...gle.com>, openipmi-developer@...ts.sourceforge.net, 
	linux-kernel@...r.kernel.org, llvm@...ts.linux.dev, kernel-team@...a.com
Subject: Re: [PATCH 2/2] ipmi: Consolidate the run to completion checking for
 xmit msgs lock

On Tue, Jan 27, 2026 at 07:54:40AM -0600, Corey Minyard wrote:
> It made things hard to read, move the check to a function.
> 
> Signed-off-by: Corey Minyard <corey@...yard.net>
> ---
>  drivers/char/ipmi/ipmi_msghandler.c | 40 ++++++++++++++++-------------
>  1 file changed, 22 insertions(+), 18 deletions(-)
> 
> diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
> index a590a67294e2..030828cdb778 100644
> --- a/drivers/char/ipmi/ipmi_msghandler.c
> +++ b/drivers/char/ipmi/ipmi_msghandler.c
> @@ -602,6 +602,20 @@ static int __ipmi_bmc_register(struct ipmi_smi *intf,
>  static int __scan_channels(struct ipmi_smi *intf,
>  				struct ipmi_device_id *id, bool rescan);
>  
> +static void ipmi_lock_xmit_msgs(struct ipmi_smi *intf, int run_to_completion,
> +				unsigned long *flags)
> +{
> +	if (!run_to_completion)
> +		spin_lock_irqsave(&intf->xmit_msgs_lock, *flags);
> +}

I usually see the opposite construction in most cases. Something like:

	static void ipmi_lock_xmit_msgs(struct ipmi_smi *intf, int run_to_completion,
					unsigned long *flags)
	{
		if (run_to_completion)
			return;

		spin_lock_irqsave(&intf->xmit_msgs_lock, *flags);
	}

Thanks for doing this, this looks way better!
--breno