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Set function-in-use flag before calling power control function in

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order to prevent turn on power twice.  This change does not prevent
power-off/power-on conflicts.
This commit is contained in:
haya 2001-04-25 09:20:32 +00:00
parent 6dd766a2b6
commit 3d8f9a4f4f
1 changed files with 7 additions and 1 deletions
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8
sys/dev/cardbus/cardbus.c
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@ -1,4 +1,4 @@
/* $NetBSD: cardbus.c,v 1.30 2001/03/28 01:55:55 enami Exp $ */
/* $NetBSD: cardbus.c,v 1.31 2001/04/25 09:20:32 haya Exp $ */
/*
* Copyright (c) 1997, 1998, 1999 and 2000
@ -671,6 +671,12 @@ enable_function(struct cardbus_softc *sc, int cdstatus, int function)
if (sc->sc_poweron_func == 0) {
/* switch to 3V and/or wait for power to stabilize */
if (cdstatus & CARDBUS_3V_CARD) {
/*
* sc_poweron_func must be substituted before
* entering sleep, in order to avoid turn on
* power twice.
*/
sc->sc_poweron_func |= (1 << function);
(*sc->sc_cf->cardbus_power)(sc->sc_cc, CARDBUS_VCC_3V);
} else {
/* No cards other than 3.3V cards. */