usb: gadget: push tty port allocation from gadget into f_acm

It possible to allocate the tty port number within the "instance"
structure of the function and there is no need to expose this
information within the gadget and therefore it is removed here.
This patch converts only f_acm and all its users. The other gadgets will
follow once the function is converted to the function interface.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 1 insertions, 13 deletions

diff --git a/drivers/usb/gadget/multi.c b/drivers/usb/gadget/multi.c
index 34427553271e..a74ebefc7682 100644
--- a/drivers/usb/gadget/multi.c
+++ b/drivers/usb/gadget/multi.c
@@ -135,7 +135,6 @@ static struct fsg_common fsg_common;
 
 static u8 hostaddr[ETH_ALEN];
 
-static unsigned char tty_line;
 static struct usb_function_instance *fi_acm;
 static struct eth_dev *the_dev;
 
@@ -270,7 +269,6 @@ static int cdc_config_register(struct usb_composite_dev *cdev)
 static int __ref multi_bind(struct usb_composite_dev *cdev)
 {
 	struct usb_gadget *gadget = cdev->gadget;
-	struct f_serial_opts *opts;
 	int status;
 
 	if (!can_support_ecm(cdev->gadget)) {
@@ -285,19 +283,12 @@ static int __ref multi_bind(struct usb_composite_dev *cdev)
 		return PTR_ERR(the_dev);
 
 	/* set up serial link layer */
-	status = gserial_alloc_line(&tty_line);
-	if (status < 0)
-		goto fail0;
-
 	fi_acm = usb_get_function_instance("acm");
 	if (IS_ERR(fi_acm)) {
 		status = PTR_ERR(fi_acm);
-		goto fail0dot5;
+		goto fail0;
 	}
 
-	opts = container_of(fi_acm, struct f_serial_opts, func_inst);
-	opts->port_num = tty_line;
-
 	/* set up mass storage function */
 	{
 		void *retp;
@@ -335,8 +326,6 @@ fail2:
 	fsg_common_put(&fsg_common);
 fail1:
 	usb_put_function_instance(fi_acm);
-fail0dot5:
-	gserial_free_line(tty_line);
 fail0:
 	gether_cleanup(the_dev);
 	return status;
@@ -351,7 +340,6 @@ static int __exit multi_unbind(struct usb_composite_dev *cdev)
 	usb_put_function(f_acm_rndis);
 #endif
 	usb_put_function_instance(fi_acm);
-	gserial_free_line(tty_line);
 	gether_cleanup(the_dev);
 	return 0;
 }