linux-kernel - [PATCH V8 08/10] USB: f81232: clarify f81232

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Message-Id: <1424944936-7117-9-git-send-email-hpeter+linux_kernel@gmail.com>
Date:	Thu, 26 Feb 2015 18:02:14 +0800
From:	Peter Hung <hpeter@...il.com>
To:	johan@...nel.org
Cc:	gregkh@...uxfoundation.org, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org, tom_tsai@...tek.com.tw,
	peter_hong@...tek.com.tw, hpeter@...il.com,
	Peter Hung <hpeter+linux_kernel@...il.com>
Subject: [PATCH V8 08/10] USB: f81232: clarify f81232_ioctl() and fix

We extract TIOCGSERIAL section in f81232_ioctl() to f81232_get_serial_info()
to make it clarify.

Also we fix device type from 16654 to 16550A, and set it's baud_base
to 115200 (1.8432MHz/16).

Signed-off-by: Peter Hung <hpeter+linux_kernel@...il.com>
---
 drivers/usb/serial/f81232.c | 30 +++++++++++++++++++-----------
 1 file changed, 19 insertions(+), 11 deletions(-)

diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c
index 0580195..21f2342 100644
--- a/drivers/usb/serial/f81232.c
+++ b/drivers/usb/serial/f81232.c
@@ -596,24 +596,32 @@ static int f81232_carrier_raised(struct usb_serial_port *port)
 	return 0;
 }
 
+static int f81232_get_serial_info(struct usb_serial_port *port,
+		unsigned long arg)
+{
+	struct serial_struct ser;
+
+	memset(&ser, 0, sizeof(ser));
+
+	ser.type = PORT_16550A;
+	ser.line = port->minor;
+	ser.port = port->port_number;
+	ser.baud_base = 115200;
+
+	if (copy_to_user((void __user *)arg, &ser, sizeof(ser)))
+		return -EFAULT;
+
+	return 0;
+}
+
 static int f81232_ioctl(struct tty_struct *tty,
 			unsigned int cmd, unsigned long arg)
 {
-	struct serial_struct ser;
 	struct usb_serial_port *port = tty->driver_data;
 
 	switch (cmd) {
 	case TIOCGSERIAL:
-		memset(&ser, 0, sizeof ser);
-		ser.type = PORT_16654;
-		ser.line = port->minor;
-		ser.port = port->port_number;
-		ser.baud_base = 460800;
-
-		if (copy_to_user((void __user *)arg, &ser, sizeof ser))
-			return -EFAULT;
-
-		return 0;
+		return f81232_get_serial_info(port, arg);
 	default:
 		break;
 	}
-- 
1.9.1

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