write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/drivers/usb/gadget/function/f_serial.c
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@@ -266,6 +266,24 @@
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 	.release	= serial_attr_release,
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 };
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+#ifdef CONFIG_U_SERIAL_CONSOLE
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+
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+static ssize_t f_serial_console_store(struct config_item *item,
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+		const char *page, size_t count)
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+{
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+	return gserial_set_console(to_f_serial_opts(item)->port_num,
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+				   page, count);
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+}
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+
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+static ssize_t f_serial_console_show(struct config_item *item, char *page)
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+{
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+	return gserial_get_console(to_f_serial_opts(item)->port_num, page);
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+}
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+
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+CONFIGFS_ATTR(f_serial_, console);
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+
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+#endif /* CONFIG_U_SERIAL_CONSOLE */
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+
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 static ssize_t f_serial_port_num_show(struct config_item *item, char *page)
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 {
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 	return sprintf(page, "%u\n", to_f_serial_opts(item)->port_num);
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@@ -274,6 +292,9 @@
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 CONFIGFS_ATTR_RO(f_serial_, port_num);
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 static struct configfs_attribute *acm_attrs[] = {
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+#ifdef CONFIG_U_SERIAL_CONSOLE
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+	&f_serial_attr_console,
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+#endif
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 	&f_serial_attr_port_num,
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 	NULL,
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 };
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@@ -324,7 +345,25 @@
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 static void gser_unbind(struct usb_configuration *c, struct usb_function *f)
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 {
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+	struct f_gser	*gser = func_to_gser(f);
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+
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+	/* Ensure port is disconnected before unbinding */
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+	gserial_disconnect(&gser->port);
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 	usb_free_all_descriptors(f);
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+}
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+
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+static void gser_resume(struct usb_function *f)
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+{
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+	struct f_gser *gser = func_to_gser(f);
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+
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+	gserial_resume(&gser->port);
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+}
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+
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+static void gser_suspend(struct usb_function *f)
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+{
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+	struct f_gser *gser = func_to_gser(f);
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+
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+	gserial_suspend(&gser->port);
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 }
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 static struct usb_function *gser_alloc(struct usb_function_instance *fi)
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@@ -348,6 +387,8 @@
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 	gser->port.func.set_alt = gser_set_alt;
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 	gser->port.func.disable = gser_disable;
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 	gser->port.func.free_func = gser_free;
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+	gser->port.func.resume = gser_resume;
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+	gser->port.func.suspend = gser_suspend;
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 	return &gser->port.func;
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 }