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powerpc pmu: Don't use garbage battery info.

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If pmu_query_battery fails, don't notify a change in battery status.

Reviewed by:	jhibbits
Differential Revision:	https://reviews.freebsd.org/D34889
This commit is contained in:
John Baldwin 2022-04-12 14:58:58 -07:00
parent 2ad93a4f6b
commit 5f2995aa95
1 changed files with 5 additions and 3 deletions
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8
sys/powerpc/powermac/pmu.c
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@ -964,7 +964,7 @@ pmu_battery_notify(struct pmu_battstate *batt, struct pmu_battstate *old)
} }
static void static void
pmu_battquery_proc() pmu_battquery_proc(void)
{ {
struct pmu_softc *sc; struct pmu_softc *sc;
struct pmu_battstate batt; struct pmu_battstate batt;
@ -977,8 +977,10 @@ pmu_battquery_proc()
while (1) { while (1) {
kproc_suspend_check(curproc); kproc_suspend_check(curproc);
error = pmu_query_battery(sc, 0, &batt); error = pmu_query_battery(sc, 0, &batt);
pmu_battery_notify(&batt, &cur_batt); if (error == 0) {
cur_batt = batt; pmu_battery_notify(&batt, &cur_batt);
cur_batt = batt;
}
pause("pmu_batt", hz); pause("pmu_batt", hz);
} }
} }