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From: Jules Irenge <jbi.octave@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: boqun.feng@gmail.com,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jiri Slaby <jslaby@suse.com>,
	linux-serial@vger.kernel.org (open list:SERIAL DRIVERS)
Subject: [PATCH 7/7] tty: serial_core: Add missing annotation for _unlock_and_check_sysrq()
Date: Tue, 31 Mar 2020 21:46:43 +0100	[thread overview]
Message-ID: <20200331204643.11262-8-jbi.octave@gmail.com> (raw)
In-Reply-To: <20200331204643.11262-1-jbi.octave@gmail.com>

Sparse reports a warning at _unlock_and_check_sysrq()

warning: context imbalance in uart_unlock_and_check_sysrq()
	- unexpected unlock

The root cause is the missing annotation at _unlock_and_check_sysrq()
Add the missing __releases(&port->lock) annotation.

Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
---
 drivers/tty/serial/serial_core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 76e506ee335c..32f93f03efce 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -3121,6 +3121,7 @@ int uart_prepare_sysrq_char(struct uart_port *port, unsigned int ch)
 EXPORT_SYMBOL_GPL(uart_prepare_sysrq_char);
 
 void uart_unlock_and_check_sysrq(struct uart_port *port, unsigned long irqflags)
+	__releases(&port->lock)
 {
 	int sysrq_ch;
 
-- 
2.24.1


  parent reply	other threads:[~2020-03-31 20:47 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <0/7>
2020-03-31 20:46 ` [PATCH 0/7] Lock warnings cleanup Jules Irenge
2020-03-31 20:46   ` [PATCH 1/7] fs: Add missing annotation for iput_final() Jules Irenge
2020-03-31 20:46   ` [PATCH 2/7] fsnotify: Add missing annotation for fsnotify_finish_user_wait() Jules Irenge
2020-04-01  9:24     ` Jan Kara
2020-04-03 16:15       ` Jules Irenge
2020-04-03 16:52         ` Jan Kara
2020-03-31 20:46   ` [PATCH 3/7] dax: Add missing annotation for wait_entry_unlocked() Jules Irenge
2020-04-01 10:01     ` Jan Kara
2020-04-01 16:04       ` Jules Irenge
2020-03-31 20:46   ` [PATCH 4/7] sysctl: Add missing annotation for start_unregistering() Jules Irenge
2020-04-02 16:06     ` Luis Chamberlain
2020-03-31 20:46   ` [PATCH 5/7] btrfs: Add missing annotation for btrfs_lock_cluster() Jules Irenge
2020-04-01 15:57     ` David Sterba
2020-03-31 20:46   ` [PATCH 6/7] btrfs: Add missing annotation for btrfs_tree_lock() Jules Irenge
2020-03-31 20:46   ` Jules Irenge [this message]
2020-04-16 13:58     ` [PATCH 7/7] tty: serial_core: Add missing annotation for _unlock_and_check_sysrq() Greg Kroah-Hartman

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