linux-kernel - [PATCH v4 2/3] serial: 8250: export serial8250_do_set

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <20180710111327.072584c0@xhacker.debian>
Date:   Tue, 10 Jul 2018 11:13:27 +0800
From:   Jisheng Zhang <Jisheng.Zhang@...aptics.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>
Cc:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-serial@...r.kernel.org>
Subject: [PATCH v4 2/3] serial: 8250: export serial8250_do_set_divisor()

Some drivers could call serial8250_do_set_divisor() to complete its
own set_divisor routine. Export this symbol for code reusing.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@...aptics.com>
---
 drivers/tty/serial/8250/8250_port.c | 5 +++--
 include/linux/serial_8250.h         | 3 +++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index ce0dc17f18ee..945f8dc2d50f 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -2580,8 +2580,8 @@ static unsigned char serial8250_compute_lcr(struct uart_8250_port *up,
 	return cval;
 }
 
-static void serial8250_do_set_divisor(struct uart_port *port, unsigned int baud,
-			    unsigned int quot, unsigned int quot_frac)
+void serial8250_do_set_divisor(struct uart_port *port, unsigned int baud,
+			       unsigned int quot, unsigned int quot_frac)
 {
 	struct uart_8250_port *up = up_to_u8250p(port);
 
@@ -2612,6 +2612,7 @@ static void serial8250_do_set_divisor(struct uart_port *port, unsigned int baud,
 		serial_port_out(port, 0x2, quot_frac);
 	}
 }
+EXPORT_SYMBOL_GPL(serial8250_do_set_divisor);
 
 static void serial8250_set_divisor(struct uart_port *port, unsigned int baud,
 				   unsigned int quot, unsigned int quot_frac)
diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index 76b9db71e489..18e21427bce4 100644
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -160,6 +160,9 @@ extern void serial8250_do_shutdown(struct uart_port *port);
 extern void serial8250_do_pm(struct uart_port *port, unsigned int state,
 			     unsigned int oldstate);
 extern void serial8250_do_set_mctrl(struct uart_port *port, unsigned int mctrl);
+extern void serial8250_do_set_divisor(struct uart_port *port, unsigned int baud,
+				      unsigned int quot,
+				      unsigned int quot_frac);
 extern int fsl8250_handle_irq(struct uart_port *port);
 int serial8250_handle_irq(struct uart_port *port, unsigned int iir);
 unsigned char serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr);
-- 
2.18.0