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Prevent multiple unregistrations.

This commit is contained in:
mlelstv 2022-08-01 14:44:15 +00:00
parent 8db4c895b6
commit 29d3175577
1 changed files with 7 additions and 3 deletions
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10
sys/dev/ic/nslm7x.c
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@ -1,4 +1,4 @@
/* $NetBSD: nslm7x.c,v 1.76 2022/08/01 14:43:15 mlelstv Exp $ */
/* $NetBSD: nslm7x.c,v 1.77 2022/08/01 14:44:15 mlelstv Exp $ */
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: nslm7x.c,v 1.76 2022/08/01 14:43:15 mlelstv Exp $");
__KERNEL_RCSID(0, "$NetBSD: nslm7x.c,v 1.77 2022/08/01 14:44:15 mlelstv Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -2247,6 +2247,7 @@ lm_attach(struct lm_softc *lmsc)
if ((rv = sysmon_envsys_sensor_attach(lmsc->sc_sme,
&lmsc->sensors[i])) != 0) {
sysmon_envsys_destroy(lmsc->sc_sme);
lmsc->sc_sme = NULL;
aprint_error_dev(lmsc->sc_dev,
"sysmon_envsys_sensor_attach() returned %d\n", rv);
return;
@ -2270,6 +2271,7 @@ lm_attach(struct lm_softc *lmsc)
aprint_error_dev(lmsc->sc_dev,
"unable to register with sysmon\n");
sysmon_envsys_destroy(lmsc->sc_sme);
lmsc->sc_sme = NULL;
}
if (!pmf_device_register(lmsc->sc_dev, NULL, NULL))
aprint_error_dev(lmsc->sc_dev,
@ -2285,7 +2287,9 @@ lm_detach(struct lm_softc *lmsc)
{
callout_halt(&lmsc->sc_callout, NULL);
callout_destroy(&lmsc->sc_callout);
sysmon_envsys_unregister(lmsc->sc_sme);
if (lmsc->sc_sme != NULL)
sysmon_envsys_unregister(lmsc->sc_sme);
pmf_device_deregister(lmsc->sc_dev);
}