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>
diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c
index 68d7bb0..c48ca1e 100644
--- a/drivers/usb/gadget/serial.c
+++ b/drivers/usb/gadget/serial.c
@@ -169,15 +169,12 @@
goto out;
for (i = 0; i < n_ports; i++) {
- struct f_serial_opts *opts;
fi_serial[i] = usb_get_function_instance(f_name);
if (IS_ERR(fi_serial[i])) {
ret = PTR_ERR(fi_serial[i]);
goto fail;
}
- opts = container_of(fi_serial[i], struct f_serial_opts, func_inst);
- opts->port_num = tty_lines[i];
f_serial[i] = usb_get_function(fi_serial[i]);
if (IS_ERR(f_serial[i])) {
@@ -212,12 +209,14 @@
static int __init gs_bind(struct usb_composite_dev *cdev)
{
int status;
- int cur_line;
+ int cur_line = 0;
- for (cur_line = 0; cur_line < n_ports; cur_line++) {
- status = gserial_alloc_line(&tty_lines[cur_line]);
- if (status)
- goto fail;
+ if (!use_acm) {
+ for (cur_line = 0; cur_line < n_ports; cur_line++) {
+ status = gserial_alloc_line(&tty_lines[cur_line]);
+ if (status)
+ goto fail;
+ }
}
/* Allocate string descriptor numbers ... note that string
@@ -258,7 +257,7 @@
fail:
cur_line--;
- while (cur_line >= 0)
+ while (cur_line >= 0 && !use_acm)
gserial_free_line(tty_lines[cur_line--]);
return status;
}
@@ -270,7 +269,8 @@
for (i = 0; i < n_ports; i++) {
usb_put_function(f_serial[i]);
usb_put_function_instance(fi_serial[i]);
- gserial_free_line(tty_lines[i]);
+ if (!use_acm)
+ gserial_free_line(tty_lines[i]);
}
return 0;
}