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usb-gadget/f_loopback: 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>
This commit is contained in:
Christoph Hellwig 2015-10-03 15:32:43 +02:00 committed by Nicholas Bellinger
parent f9a63da33d
commit 75ab2256a7
1 changed files with 12 additions and 19 deletions
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31
drivers/usb/gadget/function/f_loopback.c
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@ -413,9 +413,6 @@ static inline struct f_lb_opts *to_f_lb_opts(struct config_item *item)
func_inst.group);
}
CONFIGFS_ATTR_STRUCT(f_lb_opts);
CONFIGFS_ATTR_OPS(f_lb_opts);
static void lb_attr_release(struct config_item *item)
{
struct f_lb_opts *lb_opts = to_f_lb_opts(item);
@ -425,12 +422,11 @@ static void lb_attr_release(struct config_item *item)
static struct configfs_item_operations lb_item_ops = {
.release = lb_attr_release,
.show_attribute = f_lb_opts_attr_show,
.store_attribute = f_lb_opts_attr_store,
};
static ssize_t f_lb_opts_qlen_show(struct f_lb_opts *opts, char *page)
static ssize_t f_lb_opts_qlen_show(struct config_item *item, char *page)
{
struct f_lb_opts *opts = to_f_lb_opts(item);
int result;
mutex_lock(&opts->lock);
@ -440,9 +436,10 @@ static ssize_t f_lb_opts_qlen_show(struct f_lb_opts *opts, char *page)
return result;
}
static ssize_t f_lb_opts_qlen_store(struct f_lb_opts *opts,
static ssize_t f_lb_opts_qlen_store(struct config_item *item,
const char *page, size_t len)
{
struct f_lb_opts *opts = to_f_lb_opts(item);
int ret;
u32 num;
@ -463,13 +460,11 @@ static ssize_t f_lb_opts_qlen_store(struct f_lb_opts *opts,
return ret;
}
static struct f_lb_opts_attribute f_lb_opts_qlen =
__CONFIGFS_ATTR(qlen, S_IRUGO | S_IWUSR,
f_lb_opts_qlen_show,
f_lb_opts_qlen_store);
CONFIGFS_ATTR(f_lb_opts_, qlen);
static ssize_t f_lb_opts_bulk_buflen_show(struct f_lb_opts *opts, char *page)
static ssize_t f_lb_opts_bulk_buflen_show(struct config_item *item, char *page)
{
struct f_lb_opts *opts = to_f_lb_opts(item);
int result;
mutex_lock(&opts->lock);
@ -479,9 +474,10 @@ static ssize_t f_lb_opts_bulk_buflen_show(struct f_lb_opts *opts, char *page)
return result;
}
static ssize_t f_lb_opts_bulk_buflen_store(struct f_lb_opts *opts,
static ssize_t f_lb_opts_bulk_buflen_store(struct config_item *item,
const char *page, size_t len)
{
struct f_lb_opts *opts = to_f_lb_opts(item);
int ret;
u32 num;
@ -502,14 +498,11 @@ static ssize_t f_lb_opts_bulk_buflen_store(struct f_lb_opts *opts,
return ret;
}
static struct f_lb_opts_attribute f_lb_opts_bulk_buflen =
__CONFIGFS_ATTR(buflen, S_IRUGO | S_IWUSR,
f_lb_opts_bulk_buflen_show,
f_lb_opts_bulk_buflen_store);
CONFIGFS_ATTR(f_lb_opts_, bulk_buflen);
static struct configfs_attribute *lb_attrs[] = {
&f_lb_opts_qlen.attr,
&f_lb_opts_bulk_buflen.attr,
&f_lb_opts_attr_qlen,
&f_lb_opts_attr_bulk_buflen,
NULL,
};