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From: Johan Hovold <johan@kernel.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.com>,
	linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
	Johan Hovold <johan@kernel.org>
Subject: [PATCH 2/2] serial: msm_serial: add sparse context annotation
Date: Thu, 23 Jul 2020 14:14:23 +0200	[thread overview]
Message-ID: <20200723121423.24217-3-johan@kernel.org> (raw)
In-Reply-To: <20200723121423.24217-1-johan@kernel.org>

Add sparse context annotation to the receive handlers, which release and
reacquire the port lock, to silence sparse warnings:

	drivers/tty/serial/msm_serial.c:748:25: warning: context imbalance in 'msm_handle_rx_dm' - unexpected unlock
	drivers/tty/serial/msm_serial.c:814:28: warning: context imbalance in 'msm_handle_rx' - unexpected unlock

Signed-off-by: Johan Hovold <johan@kernel.org>
---
 drivers/tty/serial/msm_serial.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
index 60a9c53fa7cb..7f26cda5ba1c 100644
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -696,6 +696,7 @@ static void msm_enable_ms(struct uart_port *port)
 }
 
 static void msm_handle_rx_dm(struct uart_port *port, unsigned int misr)
+	__must_hold(port->lock)
 {
 	struct tty_port *tport = &port->state->port;
 	unsigned int sr;
@@ -771,6 +772,7 @@ static void msm_handle_rx_dm(struct uart_port *port, unsigned int misr)
 }
 
 static void msm_handle_rx(struct uart_port *port)
+	__must_hold(port->lock)
 {
 	struct tty_port *tport = &port->state->port;
 	unsigned int sr;
-- 
2.26.2


      parent reply	other threads:[~2020-07-23 12:14 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-23 12:14 [PATCH 0/2] serial: add sparse context annotation Johan Hovold
2020-07-23 12:14 ` [PATCH 1/2] serial: pmac_zilog: " Johan Hovold
2020-07-23 12:14 ` Johan Hovold [this message]

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