From: Junxiao Chang <junxiao.chang@intel.com>
To: bigeasy@linutronix.de, tglx@linutronix.de, rostedt@goodmis.org,
linux-kernel@vger.kernel.org
Cc: john.ogness@linutronix.de, hao3.li@intel.com, lili.li@intel.com,
jianfeng.gao@intel.com, linux-rt-users@vger.kernel.org
Subject: [PATCH 2/2] printk: nbcon: check uart port is nbcon or not in nbcon_release
Date: Tue, 23 Jan 2024 13:40:33 +0800 [thread overview]
Message-ID: <20240123054033.183114-3-junxiao.chang@intel.com> (raw)
In-Reply-To: <20240123054033.183114-1-junxiao.chang@intel.com>
Try to release nbcon only if current uart port is nbcon, as it does
in nbcon_acquire.
Signed-off-by: Junxiao Chang <junxiao.chang@intel.com>
---
kernel/printk/nbcon.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/kernel/printk/nbcon.c b/kernel/printk/nbcon.c
index b53d93585ee71..d8c6f30adde8b 100644
--- a/kernel/printk/nbcon.c
+++ b/kernel/printk/nbcon.c
@@ -1623,6 +1623,9 @@ void nbcon_release(struct uart_port *up)
.prio = NBCON_PRIO_NORMAL,
};
+ if (!uart_is_nbcon(up))
+ return;
+
if (!up->nbcon_locked_port)
return;
--
2.34.1
next prev parent reply other threads:[~2024-01-23 5:41 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-17 6:52 [PATCH] printk: nbcon: check uart port is nbcon or not in nbcon_release Junxiao Chang
2024-01-17 8:23 ` John Ogness
2024-01-17 8:45 ` Chang, Junxiao
2024-01-17 10:03 ` John Ogness
2024-01-17 10:24 ` Sebastian Andrzej Siewior
2024-01-17 13:08 ` Chang, Junxiao
2024-01-17 13:42 ` John Ogness
2024-01-23 3:05 ` Chang, Junxiao
2024-01-23 5:40 ` [PATCH 0/2] nbcon locking issue with v6.6.10-rt18 kernel Junxiao Chang
2024-01-23 5:40 ` [PATCH 1/2] printk: nbcon: move locked_port flag to struct uart_port Junxiao Chang
2024-01-24 9:47 ` John Ogness
2024-01-24 10:05 ` Sebastian Andrzej Siewior
2024-01-25 1:08 ` Chang, Junxiao
2024-01-25 13:35 ` Sebastian Andrzej Siewior
2024-01-25 23:20 ` Chang, Junxiao
2024-01-26 7:58 ` John Ogness
2024-01-26 16:39 ` Sebastian Andrzej Siewior
2024-01-23 5:40 ` Junxiao Chang [this message]
2024-01-24 9:57 ` [PATCH 2/2] printk: nbcon: check uart port is nbcon or not in nbcon_release John Ogness
2024-01-26 2:33 ` Chang, Junxiao
2024-01-24 9:40 ` [PATCH 0/2] nbcon locking issue with v6.6.10-rt18 kernel John Ogness
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