[src/trunk]: src/sys/dev/sysmon Instead of crashing, print a usable error mes...

[martin <martin%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/00fe6dfc5036
branches:  trunk
changeset: 766251:00fe6dfc5036
user:      martin <martin%NetBSD.org@localhost>
date:      Sun Jun 19 11:40:26 2011 +0000

description:
Instead of crashing, print a usable error message when a driver eroneously
does not properly initialize sensor state.

diffstat:

 sys/dev/sysmon/sysmon_envsys.c |  9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diffs (30 lines):

diff -r 438fe5da34c3 -r 00fe6dfc5036 sys/dev/sysmon/sysmon_envsys.c
--- a/sys/dev/sysmon/sysmon_envsys.c    Sun Jun 19 11:31:55 2011 +0000
+++ b/sys/dev/sysmon/sysmon_envsys.c    Sun Jun 19 11:40:26 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: sysmon_envsys.c,v 1.115 2011/06/15 13:34:13 pgoyette Exp $     */
+/*     $NetBSD: sysmon_envsys.c,v 1.116 2011/06/19 11:40:26 martin Exp $       */
 
 /*-
  * Copyright (c) 2007, 2008 Juan Romero Pardines.
@@ -64,7 +64,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sysmon_envsys.c,v 1.115 2011/06/15 13:34:13 pgoyette Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sysmon_envsys.c,v 1.116 2011/06/19 11:40:26 martin Exp $");
 
 #include <sys/param.h>
 #include <sys/types.h>
@@ -1535,6 +1535,11 @@
        int error = 0;
 
        sdt = sme_find_table_entry(SME_DESC_STATES, edata->state);
+       if (sdt == NULL) {
+               printf("sme_update_sensor_dictionary: can not update sensor "
+                   "state %d unknown\n", edata->state);
+               return EINVAL;
+       }
 
        DPRINTFOBJ(("%s: sensor #%d type=%d (%s) flags=%d\n", __func__,
            edata->sensor, sdt->type, sdt->desc, edata->flags));