cpukit/libdrvmgr/drvmgr_dev_by_name.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /* Find device by device name
0004  *
0005  * COPYRIGHT (c) 2011 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
0030 #include <string.h>
0031 #include <drvmgr/drvmgr.h>
0032 #include "drvmgr_internal.h"
0033
0034 static intptr_t dev_name_compare(struct drvmgr_dev *dev, void *arg)
0035 {
0036     const char *name = arg;
0037
0038     if (dev->name && (strcmp(dev->name, name) == 0))
0039         return (intptr_t)dev;
0040     else
0041         return 0;
0042 }
0043
0044 /* Get device by device name or bus name */
0045 struct drvmgr_dev *drvmgr_dev_by_name(const char *name)
0046 {
0047     if (!name)
0048         return NULL;
0049
0050     return (struct drvmgr_dev *)
0051         drvmgr_for_each_dev(dev_name_compare, (void *)name, 0);
0052 }