.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 0, // to be filled
.bAlternateSetting = 1,
- .bNumEndpoints = 2,
+ .bNumEndpoints = 2, // to be filled
.bInterfaceClass = USB_CLASS_AUDIO,
.bInterfaceSubClass = USB_SUBCLASS_MIDISTREAMING,
.bInterfaceProtocol = 0,
midi2->strings[gtb_to_str_id(ep->blks[blk].gtb_id)].id;
}
+ midi2_midi2_if_desc.bNumEndpoints = midi2->num_eps * 2;
+
/* audio interface */
status = usb_interface_id(c, f);
if (status < 0)
usb_free_all_descriptors(f);
}
+/*
+ * ConfigFS interface
+ */
+
+/* type conversion helpers */
+static inline struct f_midi2_opts *to_f_midi2_opts(struct config_item *item)
+{
+ return container_of(to_config_group(item), struct f_midi2_opts,
+ func_inst.group);
+}
+
+static inline struct f_midi2_ep_opts *
+to_f_midi2_ep_opts(struct config_item *item)
+{
+ return container_of(to_config_group(item), struct f_midi2_ep_opts,
+ group);
+}
+
+static inline struct f_midi2_block_opts *
+to_f_midi2_block_opts(struct config_item *item)
+{
+ return container_of(to_config_group(item), struct f_midi2_block_opts,
+ group);
+}
+
+/* trim the string to be usable for EP and FB name strings */
+static void make_name_string(char *s)
+{
+ char *p;
+
+ p = strchr(s, '\n');
+ if (p)
+ *p = 0;
+
+ p = s + strlen(s);
+ for (; p > s && isspace(*p); p--)
+ *p = 0;
+}
+
+/* configfs helpers: generic show/store for unisnged int */
+static ssize_t f_midi2_opts_uint_show(struct f_midi2_opts *opts,
+ u32 val, const char *format, char *page)
+{
+ int result;
+
+ mutex_lock(&opts->lock);
+ result = sprintf(page, format, val);
+ mutex_unlock(&opts->lock);
+ return result;
+}
+
+static ssize_t f_midi2_opts_uint_store(struct f_midi2_opts *opts,
+ u32 *valp, u32 minval, u32 maxval,
+ const char *page, size_t len)
+{
+ int ret;
+ u32 val;
+
+ mutex_lock(&opts->lock);
+ if (opts->refcnt) {
+ ret = -EBUSY;
+ goto end;
+ }
+
+ ret = kstrtou32(page, 0, &val);
+ if (ret)
+ goto end;
+ if (val < minval || val > maxval) {
+ ret = -EINVAL;
+ goto end;
+ }
+
+ *valp = val;
+ ret = len;
+
+end:
+ mutex_unlock(&opts->lock);
+ return ret;
+}
+
+/* generic store for bool */
+static ssize_t f_midi2_opts_bool_store(struct f_midi2_opts *opts,
+ bool *valp, const char *page, size_t len)
+{
+ int ret;
+ bool val;
+
+ mutex_lock(&opts->lock);
+ if (opts->refcnt) {
+ ret = -EBUSY;
+ goto end;
+ }
+
+ ret = kstrtobool(page, &val);
+ if (ret)
+ goto end;
+ *valp = val;
+ ret = len;
+
+end:
+ mutex_unlock(&opts->lock);
+ return ret;
+}
+
+/* generic show/store for string */
+static ssize_t f_midi2_opts_str_show(struct f_midi2_opts *opts,
+ const char *str, char *page)
+{
+ int result = 0;
+
+ mutex_lock(&opts->lock);
+ if (str)
+ result = scnprintf(page, PAGE_SIZE, "%s\n", str);
+ mutex_unlock(&opts->lock);
+ return result;
+}
+
+static ssize_t f_midi2_opts_str_store(struct f_midi2_opts *opts,
+ const char **strp, size_t maxlen,
+ const char *page, size_t len)
+{
+ char *c;
+ int ret;
+
+ mutex_lock(&opts->lock);
+ if (opts->refcnt) {
+ ret = -EBUSY;
+ goto end;
+ }
+
+ c = kstrndup(page, min(len, maxlen), GFP_KERNEL);
+ if (!c) {
+ ret = -ENOMEM;
+ goto end;
+ }
+
+ kfree(*strp);
+ make_name_string(c);
+ *strp = c;
+ ret = len;
+
+end:
+ mutex_unlock(&opts->lock);
+ return ret;
+}
+
+/*
+ * Definitions for UMP Block config
+ */
+
+/* define an uint option for block */
+#define F_MIDI2_BLOCK_OPT(name, format, minval, maxval) \
+static ssize_t f_midi2_block_opts_##name##_show(struct config_item *item,\
+ char *page) \
+{ \
+ struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item); \
+ return f_midi2_opts_uint_show(opts->ep->opts, opts->info.name, \
+ format "\n", page); \
+} \
+ \
+static ssize_t f_midi2_block_opts_##name##_store(struct config_item *item,\
+ const char *page, size_t len) \
+{ \
+ struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item); \
+ return f_midi2_opts_uint_store(opts->ep->opts, &opts->info.name,\
+ minval, maxval, page, len); \
+} \
+ \
+CONFIGFS_ATTR(f_midi2_block_opts_, name)
+
+/* define a boolean option for block */
+#define F_MIDI2_BLOCK_BOOL_OPT(name) \
+static ssize_t f_midi2_block_opts_##name##_show(struct config_item *item,\
+ char *page) \
+{ \
+ struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item); \
+ return f_midi2_opts_uint_show(opts->ep->opts, opts->info.name, \
+ "%u\n", page); \
+} \
+ \
+static ssize_t f_midi2_block_opts_##name##_store(struct config_item *item,\
+ const char *page, size_t len) \
+{ \
+ struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item); \
+ return f_midi2_opts_bool_store(opts->ep->opts, &opts->info.name,\
+ page, len); \
+} \
+ \
+CONFIGFS_ATTR(f_midi2_block_opts_, name)
+
+F_MIDI2_BLOCK_OPT(direction, "0x%x", 1, 3);
+F_MIDI2_BLOCK_OPT(first_group, "0x%x", 0, 15);
+F_MIDI2_BLOCK_OPT(num_groups, "0x%x", 1, 16);
+F_MIDI2_BLOCK_OPT(ui_hint, "0x%x", 0, 3);
+F_MIDI2_BLOCK_OPT(midi_ci_version, "%u", 0, 1);
+F_MIDI2_BLOCK_OPT(sysex8_streams, "%u", 0, 255);
+F_MIDI2_BLOCK_OPT(is_midi1, "%u", 0, 2);
+F_MIDI2_BLOCK_BOOL_OPT(active);
+
+static ssize_t f_midi2_block_opts_name_show(struct config_item *item,
+ char *page)
+{
+ struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item);
+
+ return f_midi2_opts_str_show(opts->ep->opts, opts->info.name, page);
+}
+
+static ssize_t f_midi2_block_opts_name_store(struct config_item *item,
+ const char *page, size_t len)
+{
+ struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item);
+
+ return f_midi2_opts_str_store(opts->ep->opts, &opts->info.name, 128,
+ page, len);
+}
+
+CONFIGFS_ATTR(f_midi2_block_opts_, name);
+
+static struct configfs_attribute *f_midi2_block_attrs[] = {
+ &f_midi2_block_opts_attr_direction,
+ &f_midi2_block_opts_attr_first_group,
+ &f_midi2_block_opts_attr_num_groups,
+ &f_midi2_block_opts_attr_ui_hint,
+ &f_midi2_block_opts_attr_midi_ci_version,
+ &f_midi2_block_opts_attr_sysex8_streams,
+ &f_midi2_block_opts_attr_is_midi1,
+ &f_midi2_block_opts_attr_active,
+ &f_midi2_block_opts_attr_name,
+ NULL,
+};
+
+static void f_midi2_block_opts_release(struct config_item *item)
+{
+ struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item);
+
+ kfree(opts->info.name);
+ kfree(opts);
+}
+
+static struct configfs_item_operations f_midi2_block_item_ops = {
+ .release = f_midi2_block_opts_release,
+};
+
+static const struct config_item_type f_midi2_block_type = {
+ .ct_item_ops = &f_midi2_block_item_ops,
+ .ct_attrs = f_midi2_block_attrs,
+ .ct_owner = THIS_MODULE,
+};
+
/* create a f_midi2_block_opts instance for the given block number */
static int f_midi2_block_opts_create(struct f_midi2_ep_opts *ep_opts,
unsigned int blk,
struct f_midi2_block_opts **block_p)
{
struct f_midi2_block_opts *block_opts;
+ int ret = 0;
+
+ mutex_lock(&ep_opts->opts->lock);
+ if (ep_opts->opts->refcnt || ep_opts->blks[blk]) {
+ ret = -EBUSY;
+ goto out;
+ }
block_opts = kzalloc(sizeof(*block_opts), GFP_KERNEL);
- if (!block_opts)
- return -ENOMEM;
+ if (!block_opts) {
+ ret = -ENOMEM;
+ goto out;
+ }
block_opts->ep = ep_opts;
block_opts->id = blk;
ep_opts->blks[blk] = block_opts;
*block_p = block_opts;
- return 0;
+
+ mutex_unlock(&ep_opts->opts->lock);
+ out:
+ return ret;
}
+/* make_group callback for a block */
+static struct config_group *
+f_midi2_opts_block_make(struct config_group *group, const char *name)
+{
+ struct f_midi2_ep_opts *ep_opts;
+ struct f_midi2_block_opts *block_opts;
+ unsigned int blk;
+ int ret;
+
+ if (strncmp(name, "block.", 6))
+ return ERR_PTR(-EINVAL);
+ ret = kstrtouint(name + 6, 10, &blk);
+ if (ret)
+ return ERR_PTR(ret);
+
+ ep_opts = to_f_midi2_ep_opts(&group->cg_item);
+
+ if (blk >= SNDRV_UMP_MAX_BLOCKS)
+ return ERR_PTR(-EINVAL);
+ if (ep_opts->blks[blk])
+ return ERR_PTR(-EBUSY);
+ ret = f_midi2_block_opts_create(ep_opts, blk, &block_opts);
+ if (ret)
+ return ERR_PTR(ret);
+
+ config_group_init_type_name(&block_opts->group, name,
+ &f_midi2_block_type);
+ return &block_opts->group;
+}
+
+/* drop_item callback for a block */
+static void
+f_midi2_opts_block_drop(struct config_group *group, struct config_item *item)
+{
+ struct f_midi2_block_opts *block_opts = to_f_midi2_block_opts(item);
+
+ mutex_lock(&block_opts->ep->opts->lock);
+ block_opts->ep->blks[block_opts->id] = NULL;
+ mutex_unlock(&block_opts->ep->opts->lock);
+ config_item_put(item);
+}
+
+/*
+ * Definitions for UMP Endpoint config
+ */
+
+/* define an uint option for EP */
+#define F_MIDI2_EP_OPT(name, format, minval, maxval) \
+static ssize_t f_midi2_ep_opts_##name##_show(struct config_item *item, \
+ char *page) \
+{ \
+ struct f_midi2_ep_opts *opts = to_f_midi2_ep_opts(item); \
+ return f_midi2_opts_uint_show(opts->opts, opts->info.name, \
+ format "\n", page); \
+} \
+ \
+static ssize_t f_midi2_ep_opts_##name##_store(struct config_item *item, \
+ const char *page, size_t len)\
+{ \
+ struct f_midi2_ep_opts *opts = to_f_midi2_ep_opts(item); \
+ return f_midi2_opts_uint_store(opts->opts, &opts->info.name, \
+ minval, maxval, page, len); \
+} \
+ \
+CONFIGFS_ATTR(f_midi2_ep_opts_, name)
+
+/* define a string option for EP */
+#define F_MIDI2_EP_STR_OPT(name, maxlen) \
+static ssize_t f_midi2_ep_opts_##name##_show(struct config_item *item, \
+ char *page) \
+{ \
+ struct f_midi2_ep_opts *opts = to_f_midi2_ep_opts(item); \
+ return f_midi2_opts_str_show(opts->opts, opts->info.name, page);\
+} \
+ \
+static ssize_t f_midi2_ep_opts_##name##_store(struct config_item *item, \
+ const char *page, size_t len) \
+{ \
+ struct f_midi2_ep_opts *opts = to_f_midi2_ep_opts(item); \
+ return f_midi2_opts_str_store(opts->opts, &opts->info.name, maxlen,\
+ page, len); \
+} \
+ \
+CONFIGFS_ATTR(f_midi2_ep_opts_, name)
+
+F_MIDI2_EP_OPT(protocol, "0x%x", 1, 2);
+F_MIDI2_EP_OPT(protocol_caps, "0x%x", 1, 3);
+F_MIDI2_EP_OPT(manufacturer, "0x%x", 0, 0xffffff);
+F_MIDI2_EP_OPT(family, "0x%x", 0, 0xffff);
+F_MIDI2_EP_OPT(model, "0x%x", 0, 0xffff);
+F_MIDI2_EP_OPT(sw_revision, "0x%x", 0, 0xffffffff);
+F_MIDI2_EP_STR_OPT(ep_name, 128);
+F_MIDI2_EP_STR_OPT(product_id, 128);
+
+static struct configfs_attribute *f_midi2_ep_attrs[] = {
+ &f_midi2_ep_opts_attr_protocol,
+ &f_midi2_ep_opts_attr_protocol_caps,
+ &f_midi2_ep_opts_attr_ep_name,
+ &f_midi2_ep_opts_attr_product_id,
+ &f_midi2_ep_opts_attr_manufacturer,
+ &f_midi2_ep_opts_attr_family,
+ &f_midi2_ep_opts_attr_model,
+ &f_midi2_ep_opts_attr_sw_revision,
+ NULL,
+};
+
+static void f_midi2_ep_opts_release(struct config_item *item)
+{
+ struct f_midi2_ep_opts *opts = to_f_midi2_ep_opts(item);
+
+ kfree(opts->info.ep_name);
+ kfree(opts->info.product_id);
+ kfree(opts);
+}
+
+static struct configfs_item_operations f_midi2_ep_item_ops = {
+ .release = f_midi2_ep_opts_release,
+};
+
+static struct configfs_group_operations f_midi2_ep_group_ops = {
+ .make_group = f_midi2_opts_block_make,
+ .drop_item = f_midi2_opts_block_drop,
+};
+
+static const struct config_item_type f_midi2_ep_type = {
+ .ct_item_ops = &f_midi2_ep_item_ops,
+ .ct_group_ops = &f_midi2_ep_group_ops,
+ .ct_attrs = f_midi2_ep_attrs,
+ .ct_owner = THIS_MODULE,
+};
+
/* create a f_midi2_ep_opts instance */
static int f_midi2_ep_opts_create(struct f_midi2_opts *opts,
unsigned int index,
return 0;
}
+/* make_group callback for an EP */
+static struct config_group *
+f_midi2_opts_ep_make(struct config_group *group, const char *name)
+{
+ struct f_midi2_opts *opts;
+ struct f_midi2_ep_opts *ep_opts;
+ unsigned int index;
+ int ret;
+
+ if (strncmp(name, "ep.", 3))
+ return ERR_PTR(-EINVAL);
+ ret = kstrtouint(name + 3, 10, &index);
+ if (ret)
+ return ERR_PTR(ret);
+
+ opts = to_f_midi2_opts(&group->cg_item);
+ if (index >= MAX_UMP_EPS)
+ return ERR_PTR(-EINVAL);
+ if (opts->eps[index])
+ return ERR_PTR(-EBUSY);
+ ret = f_midi2_ep_opts_create(opts, index, &ep_opts);
+ if (ret)
+ return ERR_PTR(ret);
+
+ config_group_init_type_name(&ep_opts->group, name, &f_midi2_ep_type);
+ return &ep_opts->group;
+}
+
+/* drop_item callback for an EP */
+static void
+f_midi2_opts_ep_drop(struct config_group *group, struct config_item *item)
+{
+ struct f_midi2_ep_opts *ep_opts = to_f_midi2_ep_opts(item);
+
+ mutex_lock(&ep_opts->opts->lock);
+ ep_opts->opts->eps[ep_opts->index] = NULL;
+ mutex_unlock(&ep_opts->opts->lock);
+ config_item_put(item);
+}
+
+/*
+ * Definitions for card config
+ */
+
+/* define a bool option for card */
+#define F_MIDI2_BOOL_OPT(name) \
+static ssize_t f_midi2_opts_##name##_show(struct config_item *item, \
+ char *page) \
+{ \
+ struct f_midi2_opts *opts = to_f_midi2_opts(item); \
+ return f_midi2_opts_uint_show(opts, opts->info.name, \
+ "%u\n", page); \
+} \
+ \
+static ssize_t f_midi2_opts_##name##_store(struct config_item *item, \
+ const char *page, size_t len) \
+{ \
+ struct f_midi2_opts *opts = to_f_midi2_opts(item); \
+ return f_midi2_opts_bool_store(opts, &opts->info.name, \
+ page, len); \
+} \
+ \
+CONFIGFS_ATTR(f_midi2_opts_, name)
+
+F_MIDI2_BOOL_OPT(process_ump);
+F_MIDI2_BOOL_OPT(static_block);
+
+static ssize_t f_midi2_opts_iface_name_show(struct config_item *item,
+ char *page)
+{
+ struct f_midi2_opts *opts = to_f_midi2_opts(item);
+
+ return f_midi2_opts_str_show(opts, opts->info.iface_name, page);
+}
+
+static ssize_t f_midi2_opts_iface_name_store(struct config_item *item,
+ const char *page, size_t len)
+{
+ struct f_midi2_opts *opts = to_f_midi2_opts(item);
+
+ return f_midi2_opts_str_store(opts, &opts->info.iface_name, 128,
+ page, len);
+}
+
+CONFIGFS_ATTR(f_midi2_opts_, iface_name);
+
+static struct configfs_attribute *f_midi2_attrs[] = {
+ &f_midi2_opts_attr_process_ump,
+ &f_midi2_opts_attr_static_block,
+ &f_midi2_opts_attr_iface_name,
+ NULL
+};
+
+static void f_midi2_opts_release(struct config_item *item)
+{
+ struct f_midi2_opts *opts = to_f_midi2_opts(item);
+
+ usb_put_function_instance(&opts->func_inst);
+}
+
+static struct configfs_item_operations f_midi2_item_ops = {
+ .release = f_midi2_opts_release,
+};
+
+static struct configfs_group_operations f_midi2_group_ops = {
+ .make_group = f_midi2_opts_ep_make,
+ .drop_item = f_midi2_opts_ep_drop,
+};
+
static const struct config_item_type f_midi2_func_type = {
+ .ct_item_ops = &f_midi2_item_ops,
+ .ct_group_ops = &f_midi2_group_ops,
+ .ct_attrs = f_midi2_attrs,
.ct_owner = THIS_MODULE,
};
opts = container_of(f, struct f_midi2_opts, func_inst);
- /* we have only one EP and one FB */
- if (opts->eps[0]) {
- kfree(opts->eps[0]->blks[0]);
- kfree(opts->eps[0]);
- }
+ kfree(opts->info.iface_name);
kfree(opts);
}
opts->info.num_reqs = 32;
opts->info.req_buf_size = 512;
+ /* create the default ep */
ret = f_midi2_ep_opts_create(opts, 0, &ep_opts);
if (ret) {
kfree(opts);
config_group_init_type_name(&opts->func_inst.group, "",
&f_midi2_func_type);
+
+ config_group_init_type_name(&ep_opts->group, "ep.0",
+ &f_midi2_ep_type);
+ configfs_add_default_group(&ep_opts->group, &opts->func_inst.group);
+
+ config_group_init_type_name(&block_opts->group, "block.0",
+ &f_midi2_block_type);
+ configfs_add_default_group(&block_opts->group, &ep_opts->group);
+
return &opts->func_inst;
}
container_of(f->fi, struct f_midi2_opts, func_inst));
}
+/* verify the parameters set up via configfs;
+ * return the number of EPs or a negative error
+ */
+static int verify_parameters(struct f_midi2_opts *opts)
+{
+ int i, j, num_eps, num_blks;
+ struct f_midi2_ep_info *ep;
+ struct f_midi2_block_info *bp;
+
+ for (num_eps = 0; num_eps < MAX_UMP_EPS && opts->eps[num_eps];
+ num_eps++)
+ ;
+ if (!num_eps) {
+ pr_err("f_midi2: No EP is defined\n");
+ return -EINVAL;
+ }
+
+ num_blks = 0;
+ for (i = 0; i < num_eps; i++) {
+ ep = &opts->eps[i]->info;
+ if (!(ep->protocol_caps & ep->protocol)) {
+ pr_err("f_midi2: Invalid protocol 0x%x (caps 0x%x) for EP %d\n",
+ ep->protocol, ep->protocol_caps, i);
+ return -EINVAL;
+ }
+
+ for (j = 0; j < SNDRV_UMP_MAX_BLOCKS && opts->eps[i]->blks[j];
+ j++, num_blks++) {
+ bp = &opts->eps[i]->blks[j]->info;
+ if (bp->first_group + bp->num_groups > SNDRV_UMP_MAX_GROUPS) {
+ pr_err("f_midi2: Invalid group definitions for block %d:%d\n",
+ i, j);
+ return -EINVAL;
+ }
+ }
+ }
+ if (!num_blks) {
+ pr_err("f_midi2: No block is defined\n");
+ return -EINVAL;
+ }
+
+ return num_eps;
+}
+
/* gadget alloc callback */
static struct usb_function *f_midi2_alloc(struct usb_function_instance *fi)
{
struct f_midi2 *midi2;
struct f_midi2_opts *opts;
- int i;
+ struct f_midi2_ep *ep;
+ struct f_midi2_block *bp;
+ int i, num_eps, blk;
midi2 = kzalloc(sizeof(*midi2), GFP_KERNEL);
if (!midi2)
opts = container_of(fi, struct f_midi2_opts, func_inst);
mutex_lock(&opts->lock);
+ num_eps = verify_parameters(opts);
+ if (num_eps < 0) {
+ mutex_unlock(&opts->lock);
+ kfree(midi2);
+ return ERR_PTR(num_eps);
+ }
++opts->refcnt;
mutex_unlock(&opts->lock);
midi2->func.free_func = f_midi2_free;
midi2->info = opts->info;
+ midi2->num_eps = num_eps;
- /* fixed 1 UMP EP and 1 UMP FB as of now */
- midi2->num_eps = 1;
- midi2->midi2_eps[0].info = opts->eps[0]->info;
- midi2->midi2_eps[0].card = midi2;
- midi2->midi2_eps[0].num_blks = 1;
- midi2->midi2_eps[0].blks[0].info = opts->eps[0]->blks[0]->info;
- midi2->midi2_eps[0].blks[0].gtb_id = 1;
-
- for (i = 0; i < midi2->num_eps; i++)
- midi2->total_blocks += midi2->midi2_eps[i].num_blks;
+ for (i = 0; i < num_eps; i++) {
+ ep = &midi2->midi2_eps[i];
+ ep->info = opts->eps[i]->info;
+ ep->card = midi2;
+ for (blk = 0; blk < SNDRV_UMP_MAX_BLOCKS &&
+ opts->eps[i]->blks[blk]; blk++) {
+ bp = &ep->blks[blk];
+ ep->num_blks++;
+ bp->info = opts->eps[i]->blks[blk]->info;
+ bp->gtb_id = ++midi2->total_blocks;
+ }
+ }
midi2->string_defs = kcalloc(midi2->total_blocks + 1,
sizeof(*midi2->string_defs), GFP_KERNEL);
}
if (opts->info.iface_name && *opts->info.iface_name)
- midi2->string_defs[0].s = opts->info.iface_name;
+ midi2->string_defs[STR_IFACE].s = opts->info.iface_name;
else
- midi2->string_defs[0].s = ump_ep_name(&midi2->midi2_eps[0]);
- midi2->string_defs[1].s = ump_fb_name(&midi2->midi2_eps[0].blks[0].info);
+ midi2->string_defs[STR_IFACE].s = ump_ep_name(&midi2->midi2_eps[0]);
+
+ for (i = 0; i < midi2->num_eps; i++) {
+ ep = &midi2->midi2_eps[i];
+ for (blk = 0; blk < ep->num_blks; blk++) {
+ bp = &ep->blks[blk];
+ midi2->string_defs[gtb_to_str_id(bp->gtb_id)].s =
+ ump_fb_name(&bp->info);
+ }
+ }
return &midi2->func;
}
projects / platform / kernel / linux-rpi.git / commitdiff