910 	struct f_midi_opts *opts = to_f_midi_opts(item);  in midi_attr_release()  local
912 	usb_put_function_instance(&opts->func_inst);  in midi_attr_release()
922 static ssize_t f_midi_opts_##name##_show(struct f_midi_opts *opts, char *page) \
926 	mutex_lock(&opts->lock);					\
927 	result = sprintf(page, "%d\n", opts->name);			\
928 	mutex_unlock(&opts->lock);					\
933 static ssize_t f_midi_opts_##name##_store(struct f_midi_opts *opts,	\
939 	mutex_lock(&opts->lock);					\
940 	if (opts->refcnt) {						\
953 	opts->name = num;						\
957 	mutex_unlock(&opts->lock);					\
971 static ssize_t f_midi_opts_id_show(struct f_midi_opts *opts, char *page)  in f_midi_opts_id_show()  argument
975 	mutex_lock(&opts->lock);  in f_midi_opts_id_show()
976 	if (opts->id) {  in f_midi_opts_id_show()
977 		result = strlcpy(page, opts->id, PAGE_SIZE);  in f_midi_opts_id_show()
983 	mutex_unlock(&opts->lock);  in f_midi_opts_id_show()
988 static ssize_t f_midi_opts_id_store(struct f_midi_opts *opts,  in f_midi_opts_id_store()  argument
994 	mutex_lock(&opts->lock);  in f_midi_opts_id_store()
995 	if (opts->refcnt) {  in f_midi_opts_id_store()
1005 	if (opts->id_allocated)  in f_midi_opts_id_store()
1006 		kfree(opts->id);  in f_midi_opts_id_store()
1007 	opts->id = c;  in f_midi_opts_id_store()
1008 	opts->id_allocated = true;  in f_midi_opts_id_store()
1011 	mutex_unlock(&opts->lock);  in f_midi_opts_id_store()
1037 	struct f_midi_opts *opts;  in f_midi_free_inst()  local
1039 	opts = container_of(f, struct f_midi_opts, func_inst);  in f_midi_free_inst()
1041 	if (opts->id_allocated)  in f_midi_free_inst()
1042 		kfree(opts->id);  in f_midi_free_inst()
1044 	kfree(opts);  in f_midi_free_inst()
1049 	struct f_midi_opts *opts;  in f_midi_alloc_inst()  local
1051 	opts = kzalloc(sizeof(*opts), GFP_KERNEL);  in f_midi_alloc_inst()
1052 	if (!opts)  in f_midi_alloc_inst()
1055 	mutex_init(&opts->lock);  in f_midi_alloc_inst()
1056 	opts->func_inst.free_func_inst = f_midi_free_inst;  in f_midi_alloc_inst()
1057 	opts->index = SNDRV_DEFAULT_IDX1;  in f_midi_alloc_inst()
1058 	opts->id = SNDRV_DEFAULT_STR1;  in f_midi_alloc_inst()
1059 	opts->buflen = 256;  in f_midi_alloc_inst()
1060 	opts->qlen = 32;  in f_midi_alloc_inst()
1061 	opts->in_ports = 1;  in f_midi_alloc_inst()
1062 	opts->out_ports = 1;  in f_midi_alloc_inst()
1064 	config_group_init_type_name(&opts->func_inst.group, "",  in f_midi_alloc_inst()
1067 	return &opts->func_inst;  in f_midi_alloc_inst()
1073 	struct f_midi_opts *opts;  in f_midi_free()  local
1077 	opts = container_of(f->fi, struct f_midi_opts, func_inst);  in f_midi_free()
1079 	mutex_lock(&opts->lock);  in f_midi_free()
1080 	for (i = opts->in_ports - 1; i >= 0; --i)  in f_midi_free()
1083 	--opts->refcnt;  in f_midi_free()
1084 	mutex_unlock(&opts->lock);  in f_midi_free()
1109 	struct f_midi_opts *opts;  in f_midi_alloc()  local
1112 	opts = container_of(fi, struct f_midi_opts, func_inst);  in f_midi_alloc()
1114 	mutex_lock(&opts->lock);  in f_midi_alloc()
1116 	if (opts->in_ports > MAX_PORTS || opts->out_ports > MAX_PORTS) {  in f_midi_alloc()
1117 		mutex_unlock(&opts->lock);  in f_midi_alloc()
1124 		mutex_unlock(&opts->lock);  in f_midi_alloc()
1128 	for (i = 0; i < opts->in_ports; i++) {  in f_midi_alloc()
1133 			mutex_unlock(&opts->lock);  in f_midi_alloc()
1144 	midi->id = kstrdup(opts->id, GFP_KERNEL);  in f_midi_alloc()
1145 	if (opts->id && !midi->id) {  in f_midi_alloc()
1147 		mutex_unlock(&opts->lock);  in f_midi_alloc()
1150 	midi->in_ports = opts->in_ports;  in f_midi_alloc()
1151 	midi->out_ports = opts->out_ports;  in f_midi_alloc()
1152 	midi->index = opts->index;  in f_midi_alloc()
1153 	midi->buflen = opts->buflen;  in f_midi_alloc()
1154 	midi->qlen = opts->qlen;  in f_midi_alloc()
1155 	++opts->refcnt;  in f_midi_alloc()
1156 	mutex_unlock(&opts->lock);  in f_midi_alloc()