linux-kernel - [PATCH 11/23] ipmi:msghandler: Remove some user level processing in panic mode

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Message-ID: <20250424165020.627193-12-corey@minyard.net>
Date: Thu, 24 Apr 2025 11:49:48 -0500
From: Corey Minyard <corey@...yard.net>
To: linux-kernel@...r.kernel.org,
	openipmi-developer@...ts.sourceforge.net,
	Rik van Riel <riel@...riel.com>
Cc: "Paul E . McKenney" <paulmck@...nel.org>,
	Breno Leitao <leitao@...ian.org>,
	Corey Minyard <corey@...yard.net>,
	Corey Minyard <cminyard@...sta.com>
Subject: [PATCH 11/23] ipmi:msghandler: Remove some user level processing in panic mode

When run to completion is set, don't call things that will claim
mutexes or call user callbacks.

Signed-off-by: Corey Minyard <cminyard@...sta.com>
---
 drivers/char/ipmi/ipmi_msghandler.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index 3e88ac6831d8..e7bed764b4bb 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -4808,6 +4808,10 @@ static void smi_work(struct work_struct *t)
 
 	handle_new_recv_msgs(intf);
 
+	/* Nothing below applies during panic time. */
+	if (run_to_completion)
+		return;
+
 	/*
 	 * If the pretimout count is non-zero, decrement one from it and
 	 * deliver pretimeouts to all the users.
-- 
2.43.0