* 02110-1301, USA.
*/
-#define IBM_VERSION "0.14"
+#define IBM_VERSION "0.15"
#define TPACPI_SYSFS_VERSION 0x010000
/*
acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
- if (thinkpad_id.ec_model && experimental) {
+ if (thinkpad_id.ec_model) {
/*
* Direct EC access mode: sensors at registers
* 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
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;
}
.update_status = brightness_update_status,
};
+static struct mutex brightness_mutex;
+
static int __init brightness_init(struct ibm_init_struct *iibm)
{
int b;
vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
+ mutex_init(&brightness_mutex);
+
if (!brightness_mode) {
if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO)
brightness_mode = 2;
static int brightness_set(int value)
{
- int cmos_cmd, inc, i;
- int current_value = brightness_get(NULL);
+ int cmos_cmd, inc, i, res;
+ int current_value;
if (value > 7)
return -EINVAL;
+ res = mutex_lock_interruptible(&brightness_mutex);
+ if (res < 0)
+ return res;
+
+ current_value = brightness_get(NULL);
+ if (current_value < 0) {
+ res = current_value;
+ goto errout;
+ }
+
cmos_cmd = value > current_value ?
TP_CMOS_BRIGHTNESS_UP :
TP_CMOS_BRIGHTNESS_DOWN;
inc = value > current_value ? 1 : -1;
+ res = 0;
for (i = current_value; i != value; i += inc) {
if ((brightness_mode & 2) &&
- issue_thinkpad_cmos_command(cmos_cmd))
- return -EIO;
+ issue_thinkpad_cmos_command(cmos_cmd)) {
+ res = -EIO;
+ goto errout;
+ }
if ((brightness_mode & 1) &&
- !acpi_ec_write(brightness_offset, i + inc))
- return -EIO;
+ !acpi_ec_write(brightness_offset, i + inc)) {
+ res = -EIO;
+ goto errout;;
+ }
}
- return 0;
+errout:
+ mutex_unlock(&brightness_mutex);
+ return res;
}
static int brightness_read(char *p)