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If we are in polling mode, do not try to spin forever in the state machine 

waiting for a read or write to complete. Workaround an issue on my VAIO,
but we really need to figure out why it is failing in the first place.
This commit is contained in:
jmcneill 2008-01-18 00:33:54 +00:00
parent 80a83a2b7e
commit 91a074d893
1 changed files with 22 additions and 6 deletions
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28
sys/dev/acpi/acpi_ec.c
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@ -1,4 +1,4 @@
/* $NetBSD: acpi_ec.c,v 1.48 2007/12/21 21:22:54 jmcneill Exp $ */
/* $NetBSD: acpi_ec.c,v 1.49 2008/01/18 00:33:54 jmcneill Exp $ */
/*-
* Copyright (c) 2007 Joerg Sonnenberger <joerg@NetBSD.org>.
@ -59,7 +59,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: acpi_ec.c,v 1.48 2007/12/21 21:22:54 jmcneill Exp $");
__KERNEL_RCSID(0, "$NetBSD: acpi_ec.c,v 1.49 2008/01/18 00:33:54 jmcneill Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -554,7 +554,7 @@ static ACPI_STATUS
acpiec_read(device_t dv, uint8_t addr, uint8_t *val)
{
struct acpiec_softc *sc = device_private(dv);
int i;
int i, timeo = 10000;
acpiec_lock(dv);
mutex_enter(&sc->sc_mtx);
@ -570,10 +570,18 @@ acpiec_read(device_t dv, uint8_t addr, uint8_t *val)
}
if (cold || acpiec_cold) {
while (sc->sc_state != EC_STATE_FREE) {
while (sc->sc_state != EC_STATE_FREE && timeo-- > 0) {
delay(1);
acpiec_gpe_state_machine(dv);
}
if (sc->sc_state != EC_STATE_FREE) {
mutex_exit(&sc->sc_mtx);
AcpiClearGpe(sc->sc_gpeh, sc->sc_gpebit, ACPI_NOT_ISR);
acpiec_unlock(dv);
aprint_error_dev(dv, "command timed out, state %d\n",
sc->sc_state);
return AE_ERROR;
}
} else while (cv_timedwait(&sc->sc_cv, &sc->sc_mtx, EC_CMD_TIMEOUT * hz)) {
mutex_exit(&sc->sc_mtx);
AcpiClearGpe(sc->sc_gpeh, sc->sc_gpebit, ACPI_NOT_ISR);
@ -594,7 +602,7 @@ static ACPI_STATUS
acpiec_write(device_t dv, uint8_t addr, uint8_t val)
{
struct acpiec_softc *sc = device_private(dv);
int i;
int i, timeo = 10000;
acpiec_lock(dv);
mutex_enter(&sc->sc_mtx);
@ -611,10 +619,18 @@ acpiec_write(device_t dv, uint8_t addr, uint8_t val)
}
if (cold || acpiec_cold) {
while (sc->sc_state != EC_STATE_FREE) {
while (sc->sc_state != EC_STATE_FREE && timeo-- > 0) {
delay(1);
acpiec_gpe_state_machine(dv);
}
if (sc->sc_state != EC_STATE_FREE) {
mutex_exit(&sc->sc_mtx);
AcpiClearGpe(sc->sc_gpeh, sc->sc_gpebit, ACPI_NOT_ISR);
acpiec_unlock(dv);
aprint_error_dev(dv, "command timed out, state %d\n",
sc->sc_state);
return AE_ERROR;
}
} else while (cv_timedwait(&sc->sc_cv, &sc->sc_mtx, EC_CMD_TIMEOUT * hz)) {
mutex_exit(&sc->sc_mtx);
AcpiClearGpe(sc->sc_gpeh, sc->sc_gpebit, ACPI_NOT_ISR);