linux-kernel - [PATCH v2 3/3] ipmi: Skip channel scan if channels are already marked ready

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 for Android: free password hash cracker in your pocket

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

Message-Id: <20250930074239.2353-4-guojinhui.liam@bytedance.com>
Date: Tue, 30 Sep 2025 15:42:39 +0800
From: Jinhui Guo <guojinhui.liam@...edance.com>
To: corey@...yard.net
Cc: openipmi-developer@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org,
	guojinhui.liam@...edance.com
Subject: [PATCH v2 3/3] ipmi: Skip channel scan if channels are already marked ready

Channels remain static unless the BMC firmware changes.
Therefore, rescanning is unnecessary while they are marked
ready and no BMC update has occurred.

Signed-off-by: Jinhui Guo <guojinhui.liam@...edance.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 536484b8e52d..db8ef2e46488 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -3439,6 +3439,10 @@ static int __scan_channels(struct ipmi_smi *intf,
 		intf->channels_ready = false;
 	}
 
+	/* Skip channel scan if channels are already marked ready */
+	if (intf->channels_ready)
+		return 0;
+
 	if (ipmi_version_major(id) > 1
 			|| (ipmi_version_major(id) == 1
 			    && ipmi_version_minor(id) >= 5)) {
-- 
2.20.1