diff options
Diffstat (limited to 'sys/kern/subr_bus.c')
| -rw-r--r-- | sys/kern/subr_bus.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sys/kern/subr_bus.c b/sys/kern/subr_bus.c index 8224b4a..bdfead6 100644 --- a/sys/kern/subr_bus.c +++ b/sys/kern/subr_bus.c @@ -23,7 +23,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: subr_bus.c,v 1.20 1999/05/08 21:59:35 dfr Exp $ + * $Id: subr_bus.c,v 1.21 1999/05/10 17:06:14 dfr Exp $ */ #include <sys/param.h> @@ -93,6 +93,7 @@ static void device_unregister_oids(device_t dev); /* * Method table handling */ +static int error_method(void); static int next_method_offset = 1; LIST_HEAD(methodlist, method) methods; @@ -114,6 +115,12 @@ register_method(struct device_op_desc *desc) return; } + /* + * Make sure that desc->deflt is always valid to simplify dispatch. + */ + if (!desc->deflt) + desc->deflt = error_method; + for (m = LIST_FIRST(&methods); m; m = LIST_NEXT(m, link)) { if (!strcmp(m->name, desc->name)) { desc->offset = m->offset; |
