From: Henrique de Moraes Holschuh <hmh@xxxxxxxxxx> We get +128 instead of -128 from the DSDT TMPx methods, due to errors when converting a EC byte return that is a s8 to an ACPI handler return that is an int. Fix it once and for all, by clamping acceptable temperature readings from DSDT TMPx so that anything outside the [-127,+127] range is converted to TP_EC_THERMAL_TMP_NA (-128). Signed-off-by: Henrique de Moraes Holschuh <hmh@xxxxxxxxxx> Cc: Michael Olbrich <michael.olbrich@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> --- drivers/misc/thinkpad_acpi.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c index 623d36f..f74d7d6 100644 --- a/drivers/misc/thinkpad_acpi.c +++ b/drivers/misc/thinkpad_acpi.c @@ -2853,6 +2853,8 @@ static int thermal_get_sensor(int idx, s32 *value) snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); if (!acpi_evalf(ec_handle, &t, tmpi, "d")) return -EIO; + if (t > 127 || t < -127) + t = TP_EC_THERMAL_TMP_NA; *value = t * 1000; return 0; } -- 1.5.3.rc2.22.g69a9b - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
