illumos gate

commit f75919702c1c9106d3c079c5ff53d79045ef2653
Author: Richard PALO <richard@NetBSD.org>
Date:   Sun Sep 13 09:49:56 2015 +0200

    fix NULL/int use in eventfd.c

diff --git a/usr/src/uts/common/io/eventfd.c b/usr/src/uts/common/io/eventfd.c
index e5082b4..5497f60 100644
--- a/usr/src/uts/common/io/eventfd.c
+++ b/usr/src/uts/common/io/eventfd.c
@@ -68,7 +68,7 @@ eventfd_open(dev_t *devp, int flag, int otyp, cred_t *cred_p)
        if (ddi_soft_state_zalloc(eventfd_softstate, minor) != DDI_SUCCESS) {
                vmem_free(eventfd_minor, (void *)(uintptr_t)minor, 1);
                mutex_exit(&eventfd_lock);
-               return (NULL);
+               return (0);
        }

        state = ddi_get_soft_state(eventfd_softstate, minor);
@@ -293,7 +293,7 @@ eventfd_attach(dev_info_t *devi, ddi_attach_cmd_t cmd)
        }

        if (ddi_create_minor_node(devi, "eventfd", S_IFCHR,
-           EVENTFDMNRN_EVENTFD, DDI_PSEUDO, NULL) == DDI_FAILURE) {
+           EVENTFDMNRN_EVENTFD, DDI_PSEUDO, 0) == DDI_FAILURE) {
                cmn_err(CE_NOTE, "/dev/eventfd couldn't create minor node");
                ddi_soft_state_fini(&eventfd_softstate);
                mutex_exit(&eventfd_lock);