cpukit/libdrvmgr/drvmgr_for_each_list_dev.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /* Iterate over one list of devices used internally by driver manager
0004  *
0005  * COPYRIGHT (c) 2009 Cobham Gaisler AB.
0006  *
0007  * Redistribution and use in source and binary forms, with or without
0008  * modification, are permitted provided that the following conditions
0009  * are met:
0010  * 1. Redistributions of source code must retain the above copyright
0011  *    notice, this list of conditions and the following disclaimer.
0012  * 2. Redistributions in binary form must reproduce the above copyright
0013  *    notice, this list of conditions and the following disclaimer in the
0014  *    documentation and/or other materials provided with the distribution.
0015  *
0016  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0017  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0018  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0019  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0020  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0021  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0022  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0023  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0024  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0025  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0026  * POSSIBILITY OF SUCH DAMAGE.
0027  */
0028
0029 #include <drvmgr/drvmgr.h>
0030 #include <drvmgr/drvmgr_list.h>
0031 #include "drvmgr_internal.h"
0032
0033 int drvmgr_for_each_listdev(
0034     struct drvmgr_list *devlist,
0035     unsigned int state_set_mask,
0036     unsigned int state_clr_mask,
0037     int (*func)(struct drvmgr_dev *dev, void *arg),
0038     void *arg
0039     )
0040 {
0041     struct drvmgr_dev *dev;
0042     int ret = 0;
0043
0044     DRVMGR_LOCK_READ();
0045
0046     /* Get First Device */
0047     dev = DEV_LIST_HEAD(devlist);
0048     while (dev) {
0049         if (((state_set_mask != 0) && ((dev->state & state_set_mask) == state_set_mask)) ||
0050             ((state_clr_mask != 0) && ((dev->state & state_clr_mask) == 0)) ||
0051             ((state_set_mask == 0) && (state_clr_mask == 0))) {
0052             ret = func(dev, arg);
0053             if (ret != 0)
0054                 break;
0055         }
0056         dev = dev->next;
0057     }
0058
0059     DRVMGR_UNLOCK();
0060
0061     return ret;
0062 }