+ u8 t, ta1, ta2;
+ int i;
+ int acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
+
+ if (ibm_thinkpad_ec_found && experimental) {
+ /*
+ * Direct EC access mode: sensors at registers
+ * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
+ * non-implemented, thermal sensors return 0x80 when
+ * not available
+ */
+
+ ta1 = ta2 = 0;
+ for (i = 0; i < 8; i++) {
+ if (likely(acpi_ec_read(0x78 + i, &t))) {
+ ta1 |= t;
+ } else {
+ ta1 = 0;
+ break;
+ }
+ if (likely(acpi_ec_read(0xC0 + i, &t))) {
+ ta2 |= t;
+ } else {
+ ta1 = 0;
+ break;
+ }
+ }
+ if (ta1 == 0) {
+ /* This is sheer paranoia, but we handle it anyway */
+ if (acpi_tmp7) {
+ printk(IBM_ERR
+ "ThinkPad ACPI EC access misbehaving, "
+ "falling back to ACPI TMPx access mode\n");
+ thermal_read_mode = IBMACPI_THERMAL_ACPI_TMP07;
+ } else {
+ printk(IBM_ERR
+ "ThinkPad ACPI EC access misbehaving, "
+ "disabling thermal sensors access\n");
+ thermal_read_mode = IBMACPI_THERMAL_NONE;
+ }
+ } else {
+ thermal_read_mode =
+ (ta2 != 0) ?
+ IBMACPI_THERMAL_TPEC_16 : IBMACPI_THERMAL_TPEC_8;
+ }
+ } else if (acpi_tmp7) {