Merge tag 'v4.7-rc6' into patchwork

Linux 4.7-rc6

* tag 'v4.7-rc6': (1245 commits)
  Linux 4.7-rc6
  ovl: warn instead of error if d_type is not supported
  MIPS: Fix possible corruption of cache mode by mprotect.
  locks: use file_inode()
  usb: dwc3: st: Use explicit reset_control_get_exclusive() API
  phy: phy-stih407-usb: Use explicit reset_control_get_exclusive() API
  phy: miphy28lp: Inform the reset framework that our reset line may be shared
  namespace: update event counter when umounting a deleted dentry
  9p: use file_dentry()
  lockd: unregister notifier blocks if the service fails to come up completely
  ACPI,PCI,IRQ: correct operator precedence
  fuse: serialize dirops by default
  drm/i915: Fix missing unlock on error in i915_ppgtt_info()
  powerpc: Initialise pci_io_base as early as possible
  mfd: da9053: Fix compiler warning message for uninitialised variable
  mfd: max77620: Fix FPS switch statements
  phy: phy-stih407-usb: Inform the reset framework that our reset line may be shared
  usb: dwc3: st: Inform the reset framework that our reset line may be shared
  usb: host: ehci-st: Inform the reset framework that our reset line may be shared
  usb: host: ohci-st: Inform the reset framework that our reset line may be shared
  ...

1 files changed, 12 insertions, 8 deletions

diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
index dd4b8417e7f4..51e0d32883ba 100644
--- a/drivers/tty/pty.c
+++ b/drivers/tty/pty.c
@@ -667,8 +667,11 @@ static void pty_unix98_remove(struct tty_driver *driver, struct tty_struct *tty)
 		fsi = tty->driver_data;
 	else
 		fsi = tty->link->driver_data;
-	devpts_kill_index(fsi, tty->index);
-	devpts_put_ref(fsi);
+
+	if (fsi) {
+		devpts_kill_index(fsi, tty->index);
+		devpts_release(fsi);
+	}
 }
 
 static const struct tty_operations ptm_unix98_ops = {
@@ -733,10 +736,11 @@ static int ptmx_open(struct inode *inode, struct file *filp)
 	if (retval)
 		return retval;
 
-	fsi = devpts_get_ref(inode, filp);
-	retval = -ENODEV;
-	if (!fsi)
+	fsi = devpts_acquire(filp);
+	if (IS_ERR(fsi)) {
+		retval = PTR_ERR(fsi);
 		goto out_free_file;
+	}
 
 	/* find a device that is not in use. */
 	mutex_lock(&devpts_mutex);
@@ -745,7 +749,7 @@ static int ptmx_open(struct inode *inode, struct file *filp)
 
 	retval = index;
 	if (index < 0)
-		goto out_put_ref;
+		goto out_put_fsi;
 
 
 	mutex_lock(&tty_mutex);
@@ -789,8 +793,8 @@ err_release:
 	return retval;
 out:
 	devpts_kill_index(fsi, index);
-out_put_ref:
-	devpts_put_ref(fsi);
+out_put_fsi:
+	devpts_release(fsi);
 out_free_file:
 	tty_free_file(filp);
 	return retval;