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usb-gadget/f_mass_storage: 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 15:32:47 +02:00 committed by Nicholas Bellinger
parent 208e61ac7c
commit 4a90cb2038
1 changed files with 46 additions and 73 deletions
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119
drivers/usb/gadget/function/f_mass_storage.c
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@ -3144,9 +3144,6 @@ static inline struct fsg_opts *to_fsg_opts(struct config_item *item)
func_inst.group);
}
CONFIGFS_ATTR_STRUCT(fsg_lun_opts);
CONFIGFS_ATTR_OPS(fsg_lun_opts);
static void fsg_lun_attr_release(struct config_item *item)
{
struct fsg_lun_opts *lun_opts;
@ -3157,110 +3154,93 @@ static void fsg_lun_attr_release(struct config_item *item)
static struct configfs_item_operations fsg_lun_item_ops = {
.release = fsg_lun_attr_release,
.show_attribute = fsg_lun_opts_attr_show,
.store_attribute = fsg_lun_opts_attr_store,
};
static ssize_t fsg_lun_opts_file_show(struct fsg_lun_opts *opts, char *page)
static ssize_t fsg_lun_opts_file_show(struct config_item *item, char *page)
{
struct fsg_opts *fsg_opts;
fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
struct fsg_lun_opts *opts = to_fsg_lun_opts(item);
struct fsg_opts *fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
return fsg_show_file(opts->lun, &fsg_opts->common->filesem, page);
}
static ssize_t fsg_lun_opts_file_store(struct fsg_lun_opts *opts,
static ssize_t fsg_lun_opts_file_store(struct config_item *item,
const char *page, size_t len)
{
struct fsg_opts *fsg_opts;
fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
struct fsg_lun_opts *opts = to_fsg_lun_opts(item);
struct fsg_opts *fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
return fsg_store_file(opts->lun, &fsg_opts->common->filesem, page, len);
}
static struct fsg_lun_opts_attribute fsg_lun_opts_file =
__CONFIGFS_ATTR(file, S_IRUGO | S_IWUSR, fsg_lun_opts_file_show,
fsg_lun_opts_file_store);
CONFIGFS_ATTR(fsg_lun_opts_, file);
static ssize_t fsg_lun_opts_ro_show(struct fsg_lun_opts *opts, char *page)
static ssize_t fsg_lun_opts_ro_show(struct config_item *item, char *page)
{
return fsg_show_ro(opts->lun, page);
return fsg_show_ro(to_fsg_lun_opts(item)->lun, page);
}
static ssize_t fsg_lun_opts_ro_store(struct fsg_lun_opts *opts,
static ssize_t fsg_lun_opts_ro_store(struct config_item *item,
const char *page, size_t len)
{
struct fsg_opts *fsg_opts;
fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
struct fsg_lun_opts *opts = to_fsg_lun_opts(item);
struct fsg_opts *fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
return fsg_store_ro(opts->lun, &fsg_opts->common->filesem, page, len);
}
static struct fsg_lun_opts_attribute fsg_lun_opts_ro =
__CONFIGFS_ATTR(ro, S_IRUGO | S_IWUSR, fsg_lun_opts_ro_show,
fsg_lun_opts_ro_store);
CONFIGFS_ATTR(fsg_lun_opts_, ro);
static ssize_t fsg_lun_opts_removable_show(struct fsg_lun_opts *opts,
static ssize_t fsg_lun_opts_removable_show(struct config_item *item,
char *page)
{
return fsg_show_removable(opts->lun, page);
return fsg_show_removable(to_fsg_lun_opts(item)->lun, page);
}
static ssize_t fsg_lun_opts_removable_store(struct fsg_lun_opts *opts,
static ssize_t fsg_lun_opts_removable_store(struct config_item *item,
const char *page, size_t len)
{
return fsg_store_removable(opts->lun, page, len);
return fsg_store_removable(to_fsg_lun_opts(item)->lun, page, len);
}
static struct fsg_lun_opts_attribute fsg_lun_opts_removable =
__CONFIGFS_ATTR(removable, S_IRUGO | S_IWUSR,
fsg_lun_opts_removable_show,
fsg_lun_opts_removable_store);
CONFIGFS_ATTR(fsg_lun_opts_, removable);
static ssize_t fsg_lun_opts_cdrom_show(struct fsg_lun_opts *opts, char *page)
static ssize_t fsg_lun_opts_cdrom_show(struct config_item *item, char *page)
{
return fsg_show_cdrom(opts->lun, page);
return fsg_show_cdrom(to_fsg_lun_opts(item)->lun, page);
}
static ssize_t fsg_lun_opts_cdrom_store(struct fsg_lun_opts *opts,
static ssize_t fsg_lun_opts_cdrom_store(struct config_item *item,
const char *page, size_t len)
{
struct fsg_opts *fsg_opts;
fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
struct fsg_lun_opts *opts = to_fsg_lun_opts(item);
struct fsg_opts *fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
return fsg_store_cdrom(opts->lun, &fsg_opts->common->filesem, page,
len);
}
static struct fsg_lun_opts_attribute fsg_lun_opts_cdrom =
__CONFIGFS_ATTR(cdrom, S_IRUGO | S_IWUSR, fsg_lun_opts_cdrom_show,
fsg_lun_opts_cdrom_store);
CONFIGFS_ATTR(fsg_lun_opts_, cdrom);
static ssize_t fsg_lun_opts_nofua_show(struct fsg_lun_opts *opts, char *page)
static ssize_t fsg_lun_opts_nofua_show(struct config_item *item, char *page)
{
return fsg_show_nofua(opts->lun, page);
return fsg_show_nofua(to_fsg_lun_opts(item)->lun, page);
}
static ssize_t fsg_lun_opts_nofua_store(struct fsg_lun_opts *opts,
static ssize_t fsg_lun_opts_nofua_store(struct config_item *item,
const char *page, size_t len)
{
return fsg_store_nofua(opts->lun, page, len);
return fsg_store_nofua(to_fsg_lun_opts(item)->lun, page, len);
}
static struct fsg_lun_opts_attribute fsg_lun_opts_nofua =
__CONFIGFS_ATTR(nofua, S_IRUGO | S_IWUSR, fsg_lun_opts_nofua_show,
fsg_lun_opts_nofua_store);
CONFIGFS_ATTR(fsg_lun_opts_, nofua);
static struct configfs_attribute *fsg_lun_attrs[] = {
&fsg_lun_opts_file.attr,
&fsg_lun_opts_ro.attr,
&fsg_lun_opts_removable.attr,
&fsg_lun_opts_cdrom.attr,
&fsg_lun_opts_nofua.attr,
&fsg_lun_opts_attr_file,
&fsg_lun_opts_attr_ro,
&fsg_lun_opts_attr_removable,
&fsg_lun_opts_attr_cdrom,
&fsg_lun_opts_attr_nofua,
NULL,
};
@ -3352,9 +3332,6 @@ static void fsg_lun_drop(struct config_group *group, struct config_item *item)
config_item_put(item);
}
CONFIGFS_ATTR_STRUCT(fsg_opts);
CONFIGFS_ATTR_OPS(fsg_opts);
static void fsg_attr_release(struct config_item *item)
{
struct fsg_opts *opts = to_fsg_opts(item);
@ -3364,12 +3341,11 @@ static void fsg_attr_release(struct config_item *item)
static struct configfs_item_operations fsg_item_ops = {
.release = fsg_attr_release,
.show_attribute = fsg_opts_attr_show,
.store_attribute = fsg_opts_attr_store,
};
static ssize_t fsg_opts_stall_show(struct fsg_opts *opts, char *page)
static ssize_t fsg_opts_stall_show(struct config_item *item, char *page)
{
struct fsg_opts *opts = to_fsg_opts(item);
int result;
mutex_lock(&opts->lock);
@ -3379,9 +3355,10 @@ static ssize_t fsg_opts_stall_show(struct fsg_opts *opts, char *page)
return result;
}
static ssize_t fsg_opts_stall_store(struct fsg_opts *opts, const char *page,
static ssize_t fsg_opts_stall_store(struct config_item *item, const char *page,
size_t len)
{
struct fsg_opts *opts = to_fsg_opts(item);
int ret;
bool stall;
@ -3403,13 +3380,12 @@ static ssize_t fsg_opts_stall_store(struct fsg_opts *opts, const char *page,
return ret;
}
static struct fsg_opts_attribute fsg_opts_stall =
__CONFIGFS_ATTR(stall, S_IRUGO | S_IWUSR, fsg_opts_stall_show,
fsg_opts_stall_store);
CONFIGFS_ATTR(fsg_opts_, stall);
#ifdef CONFIG_USB_GADGET_DEBUG_FILES
static ssize_t fsg_opts_num_buffers_show(struct fsg_opts *opts, char *page)
static ssize_t fsg_opts_num_buffers_show(struct config_item *item, char *page)
{
struct fsg_opts *opts = to_fsg_opts(item);
int result;
mutex_lock(&opts->lock);
@ -3419,9 +3395,10 @@ static ssize_t fsg_opts_num_buffers_show(struct fsg_opts *opts, char *page)
return result;
}
static ssize_t fsg_opts_num_buffers_store(struct fsg_opts *opts,
static ssize_t fsg_opts_num_buffers_store(struct config_item *item,
const char *page, size_t len)
{
struct fsg_opts *opts = to_fsg_opts(item);
int ret;
u8 num;
@ -3446,17 +3423,13 @@ end:
return ret;
}
static struct fsg_opts_attribute fsg_opts_num_buffers =
__CONFIGFS_ATTR(num_buffers, S_IRUGO | S_IWUSR,
fsg_opts_num_buffers_show,
fsg_opts_num_buffers_store);
CONFIGFS_ATTR(fsg_opts_, num_buffers);
#endif
static struct configfs_attribute *fsg_attrs[] = {
&fsg_opts_stall.attr,
&fsg_opts_attr_stall,
#ifdef CONFIG_USB_GADGET_DEBUG_FILES
&fsg_opts_num_buffers.attr,
&fsg_opts_attr_num_buffers,
#endif
NULL,
};