1 files changed, 0 insertions, 160 deletions
diff --git a/nuttx/drivers/bch/bchdev_unregister.c b/nuttx/drivers/bch/bchdev_unregister.c
deleted file mode 100644
index 8c7360882..000000000
--- a/nuttx/drivers/bch/bchdev_unregister.c
+++ /dev/null
@@ -1,160 +0,0 @@
-/****************************************************************************
- * drivers/bch/bchdev_unregister.c
- *
- *   Copyright (C) 2008-2009, 2012 Gregory Nutt. All rights reserved.
- *   Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- *    used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
-
-/****************************************************************************
- * Included Files
- ****************************************************************************/
-
-#include <nuttx/config.h>
-
-#include <sys/stat.h>
-#include <sys/ioctl.h>
-
-#include <unistd.h>
-#include <fcntl.h>
-#include <sched.h>
-#include <errno.h>
-#include <assert.h>
-#include <debug.h>
-
-#include <nuttx/fs/fs.h>
-#include <nuttx/fs/ioctl.h>
-
-#include "bch_internal.h"
-
-/****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
-
-/****************************************************************************
- * Private Function Prototypes
- ****************************************************************************/
-
-/****************************************************************************
- * Public Data
- ****************************************************************************/
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: bchdev_unregister
- *
- * Description:
- *   Unregister character driver access to a block device that was created
- *   by a previous call to bchdev_register().
- *
- ****************************************************************************/
-
-int bchdev_unregister(FAR const char *chardev)
-{
-  FAR struct bchlib_s *bch;
-  int fd;
-  int ret;
-
-  /* Sanity check */
-
-#ifdef CONFIG_DEBUG
-  if (!chardev)
-    {
-      return -EINVAL;
-    }
-#endif
-
-  /* Open the character driver associated with chardev */
-
-  fd = open(chardev, O_RDONLY);
-  if (fd < 0)
-    {
-      dbg("Failed to open %s: %d\n", chardev, errno);
-      return -errno;
-    }
-
-  /* Get a reference to the internal data structure.  On success, we
-   * will hold a reference count on the state structure.
-   */
-
-  ret = ioctl(fd, DIOC_GETPRIV, (unsigned long)((uintptr_t)&bch));
-  (void)close(fd);
-
-  if (ret < 0)
-    {
-      dbg("ioctl failed: %d\n", errno);
-      return -errno;
-    }
-
-  /* Lock out context switches.  If there are no other references
-   * and no context switches, then we can assume that we can safely
-   * teardown the driver.
-   */
-
-  sched_lock();
-
-  /* Check if the internal structure is non-busy (we hold one reference). */
-
-  if (bch->refs > 1)
-    {
-      ret = -EBUSY;
-      goto errout_with_lock;
-    }
-
-  /* Unregister the driver (this cannot suspend or we lose our non-preemptive
-   * state!).  Once the driver is successfully unregistered, we can assume
-   * we have exclusive access to the state instance.
-   */
-
-  ret = unregister_driver(chardev);
-  if (ret < 0)
-    {
-      goto errout_with_lock;
-    }
-
-  sched_unlock();
-
-  /* Release the internal structure */
-
-  bch->refs = 0;
-  return bchlib_teardown(bch);
-
-errout_with_lock:
-  bch->refs--;
-  sched_unlock();
-  return ret;
-}