From: Christoph Hellwig Date: Sat, 3 Oct 2015 13:32:47 +0000 (+0200) Subject: usb-gadget/f_mass_storage: use per-attribute show and store methods X-Git-Tag: firefly_0821_release~176^2~690^2~12 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4a90cb203836e4989cc50121b13ff0fb7f671fcb;p=firefly-linux-kernel-4.4.55.git 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 Reviewed-by: Andrzej Pietrasiewicz Acked-by: Felipe Balbi Signed-off-by: Nicholas Bellinger --- diff --git a/drivers/usb/gadget/function/f_mass_storage.c b/drivers/usb/gadget/function/f_mass_storage.c index a6eb537d7768..1ab089f86408 100644 --- a/drivers/usb/gadget/function/f_mass_storage.c +++ b/drivers/usb/gadget/function/f_mass_storage.c @@ -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, };