diff options
Diffstat (limited to 'drivers/hwmon/occ')
| -rw-r--r-- | drivers/hwmon/occ/common.c | 10 | ||||
| -rw-r--r-- | drivers/hwmon/occ/common.h | 1 |
2 files changed, 9 insertions, 2 deletions
diff --git a/drivers/hwmon/occ/common.c b/drivers/hwmon/occ/common.c index 13a6290c8d25..a7d2b16dd702 100644 --- a/drivers/hwmon/occ/common.c +++ b/drivers/hwmon/occ/common.c @@ -124,12 +124,12 @@ struct extended_sensor { static int occ_poll(struct occ *occ) { int rc; - u16 checksum = occ->poll_cmd_data + 1; + u16 checksum = occ->poll_cmd_data + occ->seq_no + 1; u8 cmd[8]; struct occ_poll_response_header *header; /* big endian */ - cmd[0] = 0; /* sequence number */ + cmd[0] = occ->seq_no++; /* sequence number */ cmd[1] = 0; /* cmd type */ cmd[2] = 0; /* data length msb */ cmd[3] = 1; /* data length lsb */ @@ -241,6 +241,12 @@ static ssize_t occ_show_temp_1(struct device *dev, val = get_unaligned_be16(&temp->sensor_id); break; case 1: + /* + * If a sensor reading has expired and couldn't be refreshed, + * OCC returns 0xFFFF for that sensor. + */ + if (temp->value == 0xFFFF) + return -EREMOTEIO; val = get_unaligned_be16(&temp->value) * 1000; break; default: diff --git a/drivers/hwmon/occ/common.h b/drivers/hwmon/occ/common.h index fc13f3c73c47..67e6968b8978 100644 --- a/drivers/hwmon/occ/common.h +++ b/drivers/hwmon/occ/common.h @@ -95,6 +95,7 @@ struct occ { struct occ_sensors sensors; int powr_sample_time_us; /* average power sample time */ + u8 seq_no; u8 poll_cmd_data; /* to perform OCC poll command */ int (*send_cmd)(struct occ *occ, u8 *cmd); |