[PATCH] inode_diet: Replace inode.u.generic_ip with inode.i_private

[pandora-kernel.git] / drivers / usb / gadget / inode.c

diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index 3f618ce..ffaa8c1 100644 (file)
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -528,7 +528,7 @@ struct kiocb_priv {
        struct usb_request      *req;
        struct ep_data          *epdata;
        void                    *buf;
-       char __user             *ubuf;
+       char __user             *ubuf;          /* NULL for writes */
        unsigned                actual;
 };
 
@@ -566,7 +566,6 @@ static ssize_t ep_aio_read_retry(struct kiocb *iocb)
                status = priv->actual;
        kfree(priv->buf);
        kfree(priv);
-       aio_put_req(iocb);
        return status;
 }
 
@@ -580,8 +579,8 @@ static void ep_aio_complete(struct usb_ep *ep, struct usb_request *req)
        spin_lock(&epdata->dev->lock);
        priv->req = NULL;
        priv->epdata = NULL;
-       if (NULL == iocb->ki_retry
-                       || unlikely(0 == req->actual)
+       if (priv->ubuf == NULL
+                       || unlikely(req->actual == 0)
                        || unlikely(kiocbIsCancelled(iocb))) {
                kfree(req->buf);
                kfree(priv);
@@ -618,7 +617,7 @@ ep_aio_rwtail(
        char __user     *ubuf
 )
 {
-       struct kiocb_priv       *priv = (void *) &iocb->private;
+       struct kiocb_priv       *priv;
        struct usb_request      *req;
        ssize_t                 value;
 
@@ -670,7 +669,7 @@ fail:
                kfree(priv);
                put_ep(epdata);
        } else
-               value = -EIOCBQUEUED;
+               value = (ubuf ? -EIOCBRETRY : -EIOCBQUEUED);
        return value;
 }
 
@@ -810,7 +809,7 @@ ep_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
                if (value == 0)
                        data->state = STATE_EP_ENABLED;
                break;
-#ifdef HIGHSPEED
+#ifdef CONFIG_USB_GADGET_DUALSPEED
        case USB_SPEED_HIGH:
                /* fails if caller didn't provide that descriptor... */
                value = usb_ep_enable (ep, &data->hs_desc);
@@ -845,7 +844,7 @@ fail1:
 static int
 ep_open (struct inode *inode, struct file *fd)
 {
-       struct ep_data          *data = inode->u.generic_ip;
+       struct ep_data          *data = inode->i_private;
        int                     value = -EBUSY;
 
        if (down_interruptible (&data->lock) != 0)
@@ -982,7 +981,7 @@ ep0_read (struct file *fd, char __user *buf, size_t len, loff_t *ptr)
                        /* assume that was SET_CONFIGURATION */
                        if (dev->current_config) {
                                unsigned power;
-#ifdef HIGHSPEED
+#ifdef CONFIG_USB_GADGET_DUALSPEED
                                if (dev->gadget->speed == USB_SPEED_HIGH)
                                        power = dev->hs_config->bMaxPower;
                                else
@@ -1039,7 +1038,7 @@ scan:
                /* ep0 can't deliver events when STATE_SETUP */
                for (i = 0; i < n; i++) {
                        if (dev->event [i].type == GADGETFS_SETUP) {
-                               len = n = i + 1;
+                               len = i + 1;
                                len *= sizeof (struct usb_gadgetfs_event);
                                n = 0;
                                break;
@@ -1262,7 +1261,7 @@ static struct file_operations ep0_io_operations = {
  * Unrecognized ep0 requests may be handled in user space.
  */
 
-#ifdef HIGHSPEED
+#ifdef CONFIG_USB_GADGET_DUALSPEED
 static void make_qualifier (struct dev_data *dev)
 {
        struct usb_qualifier_descriptor         qual;
@@ -1291,7 +1290,7 @@ static int
 config_buf (struct dev_data *dev, u8 type, unsigned index)
 {
        int             len;
-#ifdef HIGHSPEED
+#ifdef CONFIG_USB_GADGET_DUALSPEED
        int             hs;
 #endif
 
@@ -1299,7 +1298,7 @@ config_buf (struct dev_data *dev, u8 type, unsigned index)
        if (index > 0)
                return -EINVAL;
 
-#ifdef HIGHSPEED
+#ifdef CONFIG_USB_GADGET_DUALSPEED
        hs = (dev->gadget->speed == USB_SPEED_HIGH);
        if (type == USB_DT_OTHER_SPEED_CONFIG)
                hs = !hs;
@@ -1335,12 +1334,12 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
                dev->state = STATE_CONNECTED;
                dev->dev->bMaxPacketSize0 = gadget->ep0->maxpacket;
 
-#ifdef HIGHSPEED
+#ifdef CONFIG_USB_GADGET_DUALSPEED
                if (gadget->speed == USB_SPEED_HIGH && dev->hs_config == 0) {
                        ERROR (dev, "no high speed config??\n");
                        return -EINVAL;
                }
-#endif /* HIGHSPEED */
+#endif /* CONFIG_USB_GADGET_DUALSPEED */
 
                INFO (dev, "connected\n");
                event = next_event (dev, GADGETFS_CONNECT);
@@ -1352,11 +1351,11 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
                        /* ... down_trylock (&data->lock) ... */
                        if (data->state != STATE_EP_DEFER_ENABLE)
                                continue;
-#ifdef HIGHSPEED
+#ifdef CONFIG_USB_GADGET_DUALSPEED
                        if (gadget->speed == USB_SPEED_HIGH)
                                value = usb_ep_enable (ep, &data->hs_desc);
                        else
-#endif /* HIGHSPEED */
+#endif /* CONFIG_USB_GADGET_DUALSPEED */
                                value = usb_ep_enable (ep, &data->desc);
                        if (value) {
                                ERROR (dev, "deferred %s enable --> %d\n",
@@ -1391,7 +1390,7 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
                        value = min (w_length, (u16) sizeof *dev->dev);
                        req->buf = dev->dev;
                        break;
-#ifdef HIGHSPEED
+#ifdef CONFIG_USB_GADGET_DUALSPEED
                case USB_DT_DEVICE_QUALIFIER:
                        if (!dev->hs_config)
                                break;
@@ -1428,7 +1427,7 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
                        // user mode expected to disable endpoints
                } else {
                        u8      config, power;
-#ifdef HIGHSPEED
+#ifdef CONFIG_USB_GADGET_DUALSPEED
                        if (gadget->speed == USB_SPEED_HIGH) {
                                config = dev->hs_config->bConfigurationValue;
                                power = dev->hs_config->bMaxPower;
@@ -1587,13 +1586,13 @@ gadgetfs_create_file (struct super_block *sb, char const *name,
 static int activate_ep_files (struct dev_data *dev)
 {
        struct usb_ep   *ep;
+       struct ep_data  *data;
 
        gadget_for_each_ep (ep, dev->gadget) {
-               struct ep_data  *data;
 
                data = kzalloc(sizeof(*data), GFP_KERNEL);
                if (!data)
-                       goto enomem;
+                       goto enomem0;
                data->state = STATE_EP_DISABLED;
                init_MUTEX (&data->lock);
                init_waitqueue_head (&data->wait);
@@ -1608,20 +1607,23 @@ static int activate_ep_files (struct dev_data *dev)
 
                data->req = usb_ep_alloc_request (ep, GFP_KERNEL);
                if (!data->req)
-                       goto enomem;
+                       goto enomem1;
 
                data->inode = gadgetfs_create_file (dev->sb, data->name,
                                data, &ep_config_operations,
                                &data->dentry);
-               if (!data->inode) {
-                       kfree (data);
-                       goto enomem;
-               }
+               if (!data->inode)
+                       goto enomem2;
                list_add_tail (&data->epfiles, &dev->epfiles);
        }
        return 0;
 
-enomem:
+enomem2:
+       usb_ep_free_request (ep, data->req);
+enomem1:
+       put_dev (dev);
+       kfree (data);
+enomem0:
        DBG (dev, "%s enomem\n", __FUNCTION__);
        destroy_ep_files (dev);
        return -ENOMEM;
@@ -1728,7 +1730,7 @@ gadgetfs_suspend (struct usb_gadget *gadget)
 }
 
 static struct usb_gadget_driver gadgetfs_driver = {
-#ifdef HIGHSPEED
+#ifdef CONFIG_USB_GADGET_DUALSPEED
        .speed          = USB_SPEED_HIGH,
 #else
        .speed          = USB_SPEED_FULL,
@@ -1792,7 +1794,7 @@ static struct usb_gadget_driver probe_driver = {
  *
  * After initialization, the device stays active for as long as that
  * $CHIP file is open.  Events may then be read from that descriptor,
- * such configuration notifications.  More complex drivers will handle
+ * such as configuration notifications.  More complex drivers will handle
  * some control requests in user space.
  */
 
@@ -1907,7 +1909,7 @@ fail:
 static int
 dev_open (struct inode *inode, struct file *fd)
 {
-       struct dev_data         *dev = inode->u.generic_ip;
+       struct dev_data         *dev = inode->i_private;
        int                     value = -EBUSY;
 
        if (dev->state == STATE_DEV_DISABLED) {
@@ -1968,7 +1970,7 @@ gadgetfs_make_inode (struct super_block *sb,
                inode->i_blocks = 0;
                inode->i_atime = inode->i_mtime = inode->i_ctime
                                = CURRENT_TIME;
-               inode->u.generic_ip = data;
+               inode->i_private = data;
                inode->i_fop = fops;
        }
        return inode;
@@ -2032,12 +2034,10 @@ gadgetfs_fill_super (struct super_block *sb, void *opts, int silent)
                        NULL, &simple_dir_operations,
                        S_IFDIR | S_IRUGO | S_IXUGO);
        if (!inode)
-               return -ENOMEM;
+               goto enomem0;
        inode->i_op = &simple_dir_inode_operations;
-       if (!(d = d_alloc_root (inode))) {
-               iput (inode);
-               return -ENOMEM;
-       }
+       if (!(d = d_alloc_root (inode)))
+               goto enomem1;
        sb->s_root = d;
 
        /* the ep0 file is named after the controller we expect;
@@ -2045,29 +2045,36 @@ gadgetfs_fill_super (struct super_block *sb, void *opts, int silent)
         */
        dev = dev_new ();
        if (!dev)
-               return -ENOMEM;
+               goto enomem2;
 
        dev->sb = sb;
-       if (!(inode = gadgetfs_create_file (sb, CHIP,
+       if (!gadgetfs_create_file (sb, CHIP,
                                dev, &dev_init_operations,
-                               &dev->dentry))) {
-               put_dev(dev);
-               return -ENOMEM;
-       }
+                               &dev->dentry))
+               goto enomem3;
 
        /* other endpoint files are available after hardware setup,
         * from binding to a controller.
         */
        the_device = dev;
        return 0;
+
+enomem3:
+       put_dev (dev);
+enomem2:
+       dput (d);
+enomem1:
+       iput (inode);
+enomem0:
+       return -ENOMEM;
 }
 
 /* "mount -t gadgetfs path /dev/gadget" ends up here */
-static struct super_block *
+static int
 gadgetfs_get_sb (struct file_system_type *t, int flags,
-               const char *path, void *opts)
+               const char *path, void *opts, struct vfsmount *mnt)
 {
-       return get_sb_single (t, flags, opts, gadgetfs_fill_super);
+       return get_sb_single (t, flags, opts, gadgetfs_fill_super, mnt);
 }
 
 static void