Function firmware_put

freebsd/kern/subr_firmware.c:357–373

* Release a reference to a firmware image returned by firmware_get. * The caller may specify, with the FIRMWARE_UNLOAD flag, its desire * to release the resource, but the flag is only advisory. * * If this is the last reference to the firmware image, and this is an * autoloaded module, wake up the firmware_unload_task to figure out * what to do with the associated module. */

 * what to do with the associated module.
 */
void
firmware_put(const struct firmware *p, int flags)
{
	struct priv_fw *fp = PRIV_FW(p);

	mtx_lock(&firmware_mtx);
	fp->refcnt--;
	if (fp->refcnt == 0) {
		if (fp->parent != NULL)
			fp->parent->refcnt--;
		if (flags & FIRMWARE_UNLOAD)
			fp->flags |= FW_UNLOAD;
		if (fp->file)
			taskqueue_enqueue(firmware_tq, &firmware_unload_task);
	}
	mtx_unlock(&firmware_mtx);
}

/*
 * Setup directory state for the firmware_tq thread so we can do i/o.