From: Hironobu Ishii <hishii@soft.fujitsu.com>
Date: Fri, 11 Nov 2005 14:12:21 +0000 (-0600)
Subject: [PATCH] ipmi: fix inconsistent spinlock usage
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=177294d19174cf92de22434bb1fc9a8ecdbbe658;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[PATCH] ipmi: fix inconsistent spinlock usage

Part of a patch was accidentally reverted, this corrects an
inconsistent spinlock use in the IPMI message handler.

Signed-off-by: Hironobu Ishii <hishii@soft.fujitsu.com>
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index c1d06ba449b6..d16bd4b5c117 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -2648,7 +2648,7 @@ void ipmi_smi_msg_received(ipmi_smi_t          intf,
 	spin_lock_irqsave(&intf->waiting_msgs_lock, flags);
 	if (!list_empty(&intf->waiting_msgs)) {
 		list_add_tail(&msg->link, &intf->waiting_msgs);
-		spin_unlock(&intf->waiting_msgs_lock);
+		spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags);
 		goto out;
 	}
 	spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags);
@@ -2657,9 +2657,9 @@ void ipmi_smi_msg_received(ipmi_smi_t          intf,
 	if (rv > 0) {
 		/* Could not handle the message now, just add it to a
                    list to handle later. */
-		spin_lock(&intf->waiting_msgs_lock);
+		spin_lock_irqsave(&intf->waiting_msgs_lock, flags);
 		list_add_tail(&msg->link, &intf->waiting_msgs);
-		spin_unlock(&intf->waiting_msgs_lock);
+		spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags);
 	} else if (rv == 0) {
 		ipmi_free_smi_msg(msg);
 	}