netdev - Re: [PATCH 04/23] usb-gadget/f_hid: use per-attribute show and store methods

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Message-id: <56092662.5070402@samsung.com>
Date:	Mon, 28 Sep 2015 13:37:06 +0200
From:	Andrzej Pietrasiewicz <andrzej.p@...sung.com>
To:	Christoph Hellwig <hch@....de>, Joel Becker <jlbec@...lplan.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Felipe Balbi <balbi@...com>, Tejun Heo <tj@...nel.org>,
	Pratyush Anand <pratyush.anand@...il.com>,
	target-devel@...r.kernel.org, cluster-devel@...hat.com,
	ocfs2-devel@....oracle.com, linux-usb@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH 04/23] usb-gadget/f_hid: use per-attribute show and store
 methods

W dniu 25.09.2015 o 15:49, Christoph Hellwig pisze:
> Signed-off-by: Christoph Hellwig <hch@....de>

Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@...sung.com>

> ---
>   drivers/usb/gadget/function/f_hid.c | 34 ++++++++++++++--------------------
>   1 file changed, 14 insertions(+), 20 deletions(-)
>
> diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c
> index 6df9715..d15b061 100644
> --- a/drivers/usb/gadget/function/f_hid.c
> +++ b/drivers/usb/gadget/function/f_hid.c
> @@ -713,9 +713,6 @@ static inline struct f_hid_opts *to_f_hid_opts(struct config_item *item)
>   			    func_inst.group);
>   }
>
> -CONFIGFS_ATTR_STRUCT(f_hid_opts);
> -CONFIGFS_ATTR_OPS(f_hid_opts);
> -
>   static void hid_attr_release(struct config_item *item)
>   {
>   	struct f_hid_opts *opts = to_f_hid_opts(item);
> @@ -725,13 +722,12 @@ static void hid_attr_release(struct config_item *item)
>
>   static struct configfs_item_operations hidg_item_ops = {
>   	.release	= hid_attr_release,
> -	.show_attribute	= f_hid_opts_attr_show,
> -	.store_attribute = f_hid_opts_attr_store,
>   };
>
>   #define F_HID_OPT(name, prec, limit)					\
> -static ssize_t f_hid_opts_##name##_show(struct f_hid_opts *opts, char *page)\
> +static ssize_t f_hid_opts_##name##_show(struct config_item *item, char *page)\
>   {									\
> +	struct f_hid_opts *opts = to_f_hid_opts(item);			\
>   	int result;							\
>   									\
>   	mutex_lock(&opts->lock);					\
> @@ -741,9 +737,10 @@ static ssize_t f_hid_opts_##name##_show(struct f_hid_opts *opts, char *page)\
>   	return result;							\
>   }									\
>   									\
> -static ssize_t f_hid_opts_##name##_store(struct f_hid_opts *opts,	\
> +static ssize_t f_hid_opts_##name##_store(struct config_item *item,	\
>   					 const char *page, size_t len)	\
>   {									\
> +	struct f_hid_opts *opts = to_f_hid_opts(item);			\
>   	int ret;							\
>   	u##prec num;							\
>   									\
> @@ -769,16 +766,15 @@ end:									\
>   	return ret;							\
>   }									\
>   									\
> -static struct f_hid_opts_attribute f_hid_opts_##name =			\
> -	__CONFIGFS_ATTR(name, S_IRUGO | S_IWUSR, f_hid_opts_##name##_show,\
> -			f_hid_opts_##name##_store)
> +CONFIGFS_ATTR(f_hid_opts_, name)
>
>   F_HID_OPT(subclass, 8, 255);
>   F_HID_OPT(protocol, 8, 255);
>   F_HID_OPT(report_length, 16, 65535);
>
> -static ssize_t f_hid_opts_report_desc_show(struct f_hid_opts *opts, char *page)
> +static ssize_t f_hid_opts_report_desc_show(struct config_item *item, char *page)
>   {
> +	struct f_hid_opts *opts = to_f_hid_opts(item);
>   	int result;
>
>   	mutex_lock(&opts->lock);
> @@ -789,9 +785,10 @@ static ssize_t f_hid_opts_report_desc_show(struct f_hid_opts *opts, char *page)
>   	return result;
>   }
>
> -static ssize_t f_hid_opts_report_desc_store(struct f_hid_opts *opts,
> +static ssize_t f_hid_opts_report_desc_store(struct config_item *item,
>   					    const char *page, size_t len)
>   {
> +	struct f_hid_opts *opts = to_f_hid_opts(item);
>   	int ret = -EBUSY;
>   	char *d;
>
> @@ -818,16 +815,13 @@ end:
>   	return ret;
>   }
>
> -static struct f_hid_opts_attribute f_hid_opts_report_desc =
> -	__CONFIGFS_ATTR(report_desc, S_IRUGO | S_IWUSR,
> -			f_hid_opts_report_desc_show,
> -			f_hid_opts_report_desc_store);
> +CONFIGFS_ATTR(f_hid_opts_, report_desc);
>
>   static struct configfs_attribute *hid_attrs[] = {
> -	&f_hid_opts_subclass.attr,
> -	&f_hid_opts_protocol.attr,
> -	&f_hid_opts_report_length.attr,
> -	&f_hid_opts_report_desc.attr,
> +	&f_hid_opts_attr_subclass,
> +	&f_hid_opts_attr_protocol,
> +	&f_hid_opts_attr_report_length,
> +	&f_hid_opts_attr_report_desc,
>   	NULL,
>   };
>
>

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