linux-4.4.1/fmt_single_name() の履歴(No.1)

• 履歴一覧
• 差分 を表示
• 現在との差分 を表示
• ソース を表示
• linux-4.4.1/fmt_single_name() へ行く。
  • 1 (2016-02-15 (月) 11:00:09)

参照元†

• linux-4.4.1/snd_soc_component_initialize()
• linux-4.4.1/snd_soc_register_dais()

説明†

• パス: linux-4.4.1/sound/soc/soc-core.c

• FIXME: これは何？
  • 説明

引数†

• struct device *dev
  • linux-4.4.1/device
• int *id

返り値†

• char *

参考†

実装†

/*
 * Simplify DAI link configuration by removing ".-1" from device names
 * and sanitizing names.
 */
static char *fmt_single_name(struct device *dev, int *id)
{
        char *found, name[NAME_SIZE];
        int id1, id2;

        if (dev_name(dev) == NULL)
                return NULL;

• • linux-4.4.1/dev_name)()

        strlcpy(name, dev_name(dev), NAME_SIZE);

• • linux-4.4.1/strlcpy()

        /* are we a "%s.%d" name (platform and SPI components) */
        found = strstr(name, dev->driver->name);
        if (found) {

• • linux-4.4.1/strstr()

                /* get ID */
                if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {

                        /* discard ID from name if ID == -1 */
                        if (*id == -1)
                                found[strlen(dev->driver->name)] = '\0';
                }

• • linux-4.4.1/sscanf()
  • linux-4.4.1/strlen()

        } else {
                /* I2C component devices are named "bus-addr"  */
                if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
                        char tmp[NAME_SIZE];

                        /* create unique ID number from I2C addr and bus */
                        *id = ((id1 & 0xffff) << 16) + id2;

                        /* sanitize component name for DAI link creation */
                        snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
                        strlcpy(name, tmp, NAME_SIZE);

• • linux-4.4.1/snprintf()

                } else
                        *id = 0;
        }

        return kstrdup(name, GFP_KERNEL);

• • linux-4.4.1/kstrdup()

}

コメント†