gadget/function/f_mass_storage.c

3032 	struct fsg_opts		*opts;
3041 	opts = fsg_opts_from_func_inst(f->fi);
3042 	if (!opts->no_configfs) {
3163 	struct fsg_lun_opts *opts = to_fsg_lun_opts(item);
3164 	struct fsg_opts *fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
3166 	return fsg_show_file(opts->lun, &fsg_opts->common->filesem, page);
3172 	struct fsg_lun_opts *opts = to_fsg_lun_opts(item);
3173 	struct fsg_opts *fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
3175 	return fsg_store_file(opts->lun, &fsg_opts->common->filesem, page, len);
3188 	struct fsg_lun_opts *opts = to_fsg_lun_opts(item);
3189 	struct fsg_opts *fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
3191 	return fsg_store_ro(opts->lun, &fsg_opts->common->filesem, page, len);
3218 	struct fsg_lun_opts *opts = to_fsg_lun_opts(item);
3219 	struct fsg_opts *fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
3221 	return fsg_store_cdrom(opts->lun, &fsg_opts->common->filesem, page,
3257 	struct fsg_lun_opts *opts = to_fsg_lun_opts(item);
3258 	struct fsg_opts *fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
3260 	return fsg_store_forced_eject(opts->lun, &fsg_opts->common->filesem,
3286 	struct fsg_lun_opts *opts;
3315 	opts = kzalloc(sizeof(*opts), GFP_KERNEL);
3316 	if (!opts) {
3327 		kfree(opts);
3330 	opts->lun = fsg_opts->common->luns[num];
3331 	opts->lun_id = num;
3334 	config_group_init_type_name(&opts->group, name, &fsg_lun_type);
3336 	return &opts->group;
3368 	struct fsg_opts *opts = to_fsg_opts(item);
3370 	usb_put_function_instance(&opts->func_inst);
3379 	struct fsg_opts *opts = to_fsg_opts(item);
3382 	mutex_lock(&opts->lock);
3383 	result = sprintf(page, "%d", opts->common->can_stall);
3384 	mutex_unlock(&opts->lock);
3392 	struct fsg_opts *opts = to_fsg_opts(item);
3396 	mutex_lock(&opts->lock);
3398 	if (opts->refcnt) {
3399 		mutex_unlock(&opts->lock);
3405 		opts->common->can_stall = stall;
3409 	mutex_unlock(&opts->lock);
3419 	struct fsg_opts *opts = to_fsg_opts(item);
3422 	mutex_lock(&opts->lock);
3423 	result = sprintf(page, "%d", opts->common->fsg_num_buffers);
3424 	mutex_unlock(&opts->lock);
3432 	struct fsg_opts *opts = to_fsg_opts(item);
3436 	mutex_lock(&opts->lock);
3437 	if (opts->refcnt) {
3445 	ret = fsg_common_set_num_buffers(opts->common, num);
3451 	mutex_unlock(&opts->lock);
3480 	struct fsg_opts *opts;
3482 	opts = fsg_opts_from_func_inst(fi);
3483 	fsg_common_release(opts->common);
3484 	kfree(opts);
3489 	struct fsg_opts *opts;
3493 	opts = kzalloc(sizeof(*opts), GFP_KERNEL);
3494 	if (!opts)
3496 	mutex_init(&opts->lock);
3497 	opts->func_inst.free_func_inst = fsg_free_inst;
3498 	opts->common = fsg_common_setup(opts->common);
3499 	if (IS_ERR(opts->common)) {
3500 		rc = PTR_ERR(opts->common);
3504 	rc = fsg_common_set_num_buffers(opts->common,
3513 	rc = fsg_common_create_lun(opts->common, &config, 0, "lun.0",
3514 			(const char **)&opts->func_inst.group.cg_item.ci_name);
3518 	opts->lun0.lun = opts->common->luns[0];
3519 	opts->lun0.lun_id = 0;
3521 	config_group_init_type_name(&opts->func_inst.group, "", &fsg_func_type);
3523 	config_group_init_type_name(&opts->lun0.group, "lun.0", &fsg_lun_type);
3524 	configfs_add_default_group(&opts->lun0.group, &opts->func_inst.group);
3526 	return &opts->func_inst;
3529 	fsg_common_free_buffers(opts->common);
3531 	kfree(opts->common);
3533 	kfree(opts);
3540 	struct fsg_opts *opts;
3543 	opts = container_of(f->fi, struct fsg_opts, func_inst);
3545 	mutex_lock(&opts->lock);
3546 	opts->refcnt--;
3547 	mutex_unlock(&opts->lock);
3554 	struct fsg_opts *opts = fsg_opts_from_func_inst(fi);
3555 	struct fsg_common *common = opts->common;
3562 	mutex_lock(&opts->lock);
3563 	opts->refcnt++;
3564 	mutex_unlock(&opts->lock);