Commit c4ed4ac1 authored by Sebastian Andrzej Siewior's avatar Sebastian Andrzej Siewior Committed by Felipe Balbi
Browse files

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: default avatarSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent d6a01439

drivers/usb/gadget/acm_ms.c

+1 −14
Original line number Diff line number Diff line
@@ -109,7 +109,6 @@ FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data); 
static struct fsg_common fsg_common;



/*-------------------------------------------------------------------------*/

static unsigned char tty_line;

static struct usb_function *f_acm;

static struct usb_function_instance *f_acm_inst;

/*
@@ -117,7 +116,6 @@ static struct usb_function_instance *f_acm_inst; 
 */

static int __init acm_ms_do_config(struct usb_configuration *c)

{

	struct f_serial_opts *opts;

	int	status;



	if (gadget_is_otg(c->cdev->gadget)) {
@@ -129,9 +127,6 @@ static int __init acm_ms_do_config(struct usb_configuration *c) 
	if (IS_ERR(f_acm_inst))

		return PTR_ERR(f_acm_inst);



	opts = container_of(f_acm_inst, struct f_serial_opts, func_inst);

	opts->port_num = tty_line;



	f_acm = usb_get_function(f_acm_inst);

	if (IS_ERR(f_acm)) {

		status = PTR_ERR(f_acm);
@@ -171,16 +166,11 @@ static int __init acm_ms_bind(struct usb_composite_dev *cdev) 
	int			status;

	void			*retp;



	/* set up serial link layer */

	status = gserial_alloc_line(&tty_line);

	if (status < 0)

		return status;



	/* set up mass storage function */

	retp = fsg_common_from_params(&fsg_common, cdev, &fsg_mod_data);

	if (IS_ERR(retp)) {

		status = PTR_ERR(retp);

		goto fail0;

		return PTR_ERR(retp);

	}



	/*
@@ -207,8 +197,6 @@ static int __init acm_ms_bind(struct usb_composite_dev *cdev) 
	/* error recovery */

fail1:

	fsg_common_put(&fsg_common);

fail0:

	gserial_free_line(tty_line);

	return status;

}
@@ -216,7 +204,6 @@ static int __exit acm_ms_unbind(struct usb_composite_dev *cdev) 
{

	usb_put_function(f_acm);

	usb_put_function_instance(f_acm_inst);

	gserial_free_line(tty_line);

	return 0;

}

drivers/usb/gadget/cdc2.c

+0 −13
Original line number Diff line number Diff line
@@ -108,13 +108,11 @@ static struct eth_dev *the_dev; 
static struct usb_function *f_acm;

static struct usb_function_instance *fi_serial;



static unsigned char tty_line;

/*

 * We _always_ have both CDC ECM and CDC ACM functions.

 */

static int __init cdc_do_config(struct usb_configuration *c)

{

	struct f_serial_opts *opts;

	int	status;



	if (gadget_is_otg(c->cdev->gadget)) {
@@ -130,9 +128,6 @@ static int __init cdc_do_config(struct usb_configuration *c) 
	if (IS_ERR(fi_serial))

		return PTR_ERR(fi_serial);



	opts = container_of(fi_serial, struct f_serial_opts, func_inst);

	opts->port_num = tty_line;



	f_acm = usb_get_function(fi_serial);

	if (IS_ERR(f_acm))

		goto err_func_acm;
@@ -173,11 +168,6 @@ static int __init cdc_bind(struct usb_composite_dev *cdev) 
	if (IS_ERR(the_dev))

		return PTR_ERR(the_dev);



	/* set up serial link layer */

	status = gserial_alloc_line(&tty_line);

	if (status < 0)

		goto fail0;



	/* Allocate string descriptor numbers ... note that string

	 * contents can be overridden by the composite_dev glue.

	 */
@@ -200,8 +190,6 @@ static int __init cdc_bind(struct usb_composite_dev *cdev) 
	return 0;



fail1:

	gserial_free_line(tty_line);

fail0:

	gether_cleanup(the_dev);

	return status;

}
@@ -210,7 +198,6 @@ static int __exit cdc_unbind(struct usb_composite_dev *cdev) 
{

	usb_put_function(f_acm);

	usb_put_function_instance(fi_serial);

	gserial_free_line(tty_line);

	gether_cleanup(the_dev);

	return 0;

}

drivers/usb/gadget/f_acm.c

+7 −0
Original line number Diff line number Diff line
@@ -768,17 +768,24 @@ static void acm_free_instance(struct usb_function_instance *fi) 
	struct f_serial_opts *opts;



	opts = container_of(fi, struct f_serial_opts, func_inst);

	gserial_free_line(opts->port_num);

	kfree(opts);

}



static struct usb_function_instance *acm_alloc_instance(void)

{

	struct f_serial_opts *opts;

	int ret;



	opts = kzalloc(sizeof(*opts), GFP_KERNEL);

	if (!opts)

		return ERR_PTR(-ENOMEM);

	opts->func_inst.free_func_inst = acm_free_instance;

	ret = gserial_alloc_line(&opts->port_num);

	if (ret) {

		kfree(opts);

		return ERR_PTR(ret);

	}

	return &opts->func_inst;

}

DECLARE_USB_FUNCTION_INIT(acm, acm_alloc_instance, acm_alloc_func);

drivers/usb/gadget/multi.c

+1 −13
Original line number Diff line number Diff line
@@ -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;

}

drivers/usb/gadget/nokia.c

+0 −4
Original line number Diff line number Diff line
@@ -104,7 +104,6 @@ static struct eth_dev *the_dev; 
enum {

	TTY_PORT_OBEX0,

	TTY_PORT_OBEX1,

	TTY_PORT_ACM,

	TTY_PORTS_MAX,

};
@@ -174,7 +173,6 @@ err_conf: 
static int __init nokia_bind(struct usb_composite_dev *cdev)

{

	struct usb_gadget	*gadget = cdev->gadget;

	struct f_serial_opts	*opts;

	int			status;

	int			cur_line;
@@ -209,8 +207,6 @@ static int __init nokia_bind(struct usb_composite_dev *cdev) 
	fi_acm = usb_get_function_instance("acm");

	if (IS_ERR(fi_acm))

		goto err_usb;

	opts = container_of(fi_acm, struct f_serial_opts, func_inst);

	opts->port_num = tty_lines[TTY_PORT_ACM];



	/* finally register the configuration */

	status = usb_add_config(cdev, &nokia_config_500ma_driver,

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