linux-kernel - [PATCH v2 12/22] usb: serial: ti_usb_3410_5052: Remove usb_serial pointer in ti

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Message-Id: <20160726180002.2398-13-m.othacehe@gmail.com>
Date:	Tue, 26 Jul 2016 19:59:52 +0200
From:	Mathieu OTHACEHE <m.othacehe@...il.com>
To:	johan@...nel.org, gregkh@...uxfoundation.org
Cc:	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
	Mathieu OTHACEHE <m.othacehe@...il.com>
Subject: [PATCH v2 12/22] usb: serial: ti_usb_3410_5052: Remove usb_serial pointer in ti_port

There is no need to keep a pointer to usb_serial in ti_port
structure.

Signed-off-by: Mathieu OTHACEHE <m.othacehe@...il.com>
---
 drivers/usb/serial/ti_usb_3410_5052.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index ee8f08c..8b1dc1a 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -304,7 +304,6 @@ struct ti_port {
 struct ti_device {
 	struct mutex		td_open_close_lock;
 	int			td_open_port_count;
-	struct usb_serial	*td_serial;
 	int			td_is_3410;
 	bool			td_rs485_only;
 };
@@ -351,7 +350,7 @@ static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
 static int ti_write_byte(struct usb_serial_port *port, u32 addr,
 			 u8 mask, u8 byte);
 
-static int ti_download_firmware(struct ti_device *tdev);
+static int ti_download_firmware(struct usb_serial *serial);
 
 static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
 
@@ -597,7 +596,6 @@ static int ti_startup(struct usb_serial *serial)
 		return -ENOMEM;
 
 	mutex_init(&tdev->td_open_close_lock);
-	tdev->td_serial = serial;
 	usb_set_serial_data(serial, tdev);
 
 	/* determine device type */
@@ -622,7 +620,7 @@ static int ti_startup(struct usb_serial *serial)
 
 	/* if we have only 1 configuration and 1 endpoint, download firmware */
 	if (dev->descriptor.bNumConfigurations == 1 && num_endpoints == 1) {
-		status = ti_download_firmware(tdev);
+		status = ti_download_firmware(serial);
 
 		if (status != 0)
 			goto free_tdev;
@@ -729,7 +727,7 @@ static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
 	/* start interrupt urb the first time a port is opened on this device */
 	if (tdev->td_open_port_count == 0) {
 		dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__);
-		urb = tdev->td_serial->port[0]->interrupt_in_urb;
+		urb = serial->port[0]->interrupt_in_urb;
 		if (!urb) {
 			dev_err(&port->dev, "%s - no interrupt urb\n", __func__);
 			status = -EINVAL;
@@ -824,7 +822,7 @@ static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
 
 unlink_int_urb:
 	if (tdev->td_open_port_count == 0)
-		usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
+		usb_kill_urb(serial->port[0]->interrupt_in_urb);
 release_lock:
 	mutex_unlock(&tdev->td_open_close_lock);
 	return status;
@@ -1661,17 +1659,19 @@ static int ti_do_download(struct usb_device *dev, int pipe,
 	return status;
 }
 
-static int ti_download_firmware(struct ti_device *tdev)
+static int ti_download_firmware(struct usb_serial *serial)
 {
 	int status;
 	int buffer_size;
 	u8 *buffer;
-	struct usb_device *dev = tdev->td_serial->dev;
-	unsigned int pipe = usb_sndbulkpipe(dev,
-		tdev->td_serial->port[0]->bulk_out_endpointAddress);
+	struct usb_device *dev = serial->dev;
+	struct ti_device *tdev = usb_get_serial_data(serial);
+	unsigned int pipe;
 	const struct firmware *fw_p;
 	char buf[32];
 
+	pipe = usb_sndbulkpipe(dev, serial->port[0]->bulk_out_endpointAddress);
+
 	if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) {
 		snprintf(buf,
 			sizeof(buf),
-- 
2.9.0