82 lines
2.3 KiB
C
82 lines
2.3 KiB
C
/****************************************************************************
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* drivers/bch/bchlib_teardown.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <assert.h>
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#include <debug.h>
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#include <nuttx/kmalloc.h>
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#include <nuttx/fs/fs.h>
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#include <nuttx/drivers/drivers.h>
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#include "bch.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: bchlib_teardown
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*
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* Description:
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* Close the block driver and free resources
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*
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****************************************************************************/
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int bchlib_teardown(FAR void *handle)
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{
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FAR struct bchlib_s *bch = (FAR struct bchlib_s *)handle;
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DEBUGASSERT(handle);
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/* Check that there are not outstanding reference counts on the object */
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if (bch->refs > 0)
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{
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return -EBUSY;
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}
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/* Flush any pending data to the block driver */
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bchlib_flushsector(bch, false);
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/* Close the block driver */
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close_blockdriver(bch->inode);
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/* Free the BCH state structure */
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if (bch->buffer)
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{
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kmm_free(bch->buffer);
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}
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nxmutex_destroy(&bch->lock);
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kmm_free(bch);
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return OK;
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}
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