linux-kernel - [PATCH v3 3/4 RESEND] USB: serial: cp210x: Switch to new 8-bit and 32-bit register access functions.

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Date:	Sat, 16 Jan 2016 13:46:54 -0600
From:	Konstantin Shkolnyy <konstantin.shkolnyy@...il.com>
To:	johan@...nel.org
Cc:	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	Konstantin Shkolnyy <konstantin.shkolnyy@...il.com>
Subject: [PATCH v3 3/4 RESEND] USB: serial: cp210x: Switch to new 8-bit and 32-bit register access functions.

Change to use new 8-bit and 32-bit register access functions instead of
cp210x_get_config and cp210x_set_config.

Signed-off-by: Konstantin Shkolnyy <konstantin.shkolnyy@...il.com>
---
change in v3: Presented new function addition as a separate patch #1,
to simplify code review.

 drivers/usb/serial/cp210x.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index 7a91c6c..1339d77 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -787,10 +787,10 @@ static void cp210x_get_termios_port(struct usb_serial_port *port,
 {
 	struct device *dev = &port->dev;
 	unsigned int cflag, modem_ctl[4];
-	unsigned int baud;
+	u32 baud;
 	u16 bits;
 
-	cp210x_get_config(port, CP210X_GET_BAUDRATE, &baud, 4);
+	cp210x_read_u32_reg(port, CP210X_GET_BAUDRATE, &baud);
 
 	dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud);
 	*baudp = baud;
@@ -937,8 +937,7 @@ static void cp210x_change_speed(struct tty_struct *tty,
 	baud = cp210x_quantise_baudrate(baud);
 
 	dev_dbg(&port->dev, "%s - setting baud rate to %u\n", __func__, baud);
-	if (cp210x_set_config(port, CP210X_SET_BAUDRATE, &baud,
-							sizeof(baud))) {
+	if (cp210x_write_u32_reg(port, CP210X_SET_BAUDRATE, baud)) {
 		dev_warn(&port->dev, "failed to set baud rate to %u\n", baud);
 		if (old_termios)
 			baud = old_termios->c_ospeed;
@@ -1109,10 +1108,10 @@ static void cp210x_dtr_rts(struct usb_serial_port *p, int on)
 static int cp210x_tiocmget(struct tty_struct *tty)
 {
 	struct usb_serial_port *port = tty->driver_data;
-	unsigned int control;
+	u8 control;
 	int result;
 
-	cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1);
+	cp210x_read_u8_reg(port, CP210X_GET_MDMSTS, &control);
 
 	result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0)
 		|((control & CONTROL_RTS) ? TIOCM_RTS : 0)
-- 
1.8.4.5