From 0b4be4fa878780a15a953577499eb69839942956 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Sat, 3 Oct 2015 15:32:52 +0200
Subject: [PATCH] usb-gadget/f_serial: use per-attribute show and store methods
To simplify the configfs interface and remove boilerplate code that also
causes binary bloat.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---
drivers/usb/gadget/function/f_serial.c | 26 ++++----------------------
1 file changed, 4 insertions(+), 22 deletions(-)
diff --git a/drivers/usb/gadget/function/f_serial.c b/drivers/usb/gadget/function/f_serial.c
index 1d162e200e831..ec837f4ea4162 100644
--- a/drivers/usb/gadget/function/f_serial.c
+++ b/drivers/usb/gadget/function/f_serial.c
@@ -266,22 +266,6 @@ static inline struct f_serial_opts *to_f_serial_opts(struct config_item *item)
func_inst.group);
}
-CONFIGFS_ATTR_STRUCT(f_serial_opts);
-static ssize_t f_serial_attr_show(struct config_item *item,
- struct configfs_attribute *attr,
- char *page)
-{
- struct f_serial_opts *opts = to_f_serial_opts(item);
- struct f_serial_opts_attribute *f_serial_opts_attr =
- container_of(attr, struct f_serial_opts_attribute, attr);
- ssize_t ret = 0;
-
- if (f_serial_opts_attr->show)
- ret = f_serial_opts_attr->show(opts, page);
-
- return ret;
-}
-
static void serial_attr_release(struct config_item *item)
{
struct f_serial_opts *opts = to_f_serial_opts(item);
@@ -291,19 +275,17 @@ static void serial_attr_release(struct config_item *item)
static struct configfs_item_operations serial_item_ops = {
.release = serial_attr_release,
- .show_attribute = f_serial_attr_show,
};
-static ssize_t f_serial_port_num_show(struct f_serial_opts *opts, char *page)
+static ssize_t f_serial_port_num_show(struct config_item *item, char *page)
{
- return sprintf(page, "%u\n", opts->port_num);
+ return sprintf(page, "%u\n", to_f_serial_opts(item)->port_num);
}
-static struct f_serial_opts_attribute f_serial_port_num =
- __CONFIGFS_ATTR_RO(port_num, f_serial_port_num_show);
+CONFIGFS_ATTR_RO(f_serial_, port_num);
static struct configfs_attribute *acm_attrs[] = {
- &f_serial_port_num.attr,
+ &f_serial_attr_port_num,
NULL,
};
--
GitLab