diff options
| author | Jean Delvare <khali@linux-fr.org> | 2010-10-28 20:31:46 +0200 |
|---|---|---|
| committer | Jean Delvare <khali@endymion.delvare> | 2010-10-28 20:31:46 +0200 |
| commit | 6c82b2f3fb31e43a9b898769afd2151ca64986a4 (patch) | |
| tree | 1315014b74cc4ea9cea40c7fc8bf60f7826cca3d | |
| parent | 71caf46fbf39207a324a16ddb6d8ef37c05777b9 (diff) | |
| download | lwn-6c82b2f3fb31e43a9b898769afd2151ca64986a4.tar.gz lwn-6c82b2f3fb31e43a9b898769afd2151ca64986a4.zip | |
hwmon: (w83795) Fix LSB reading of fan speeds
Misplaced parentheses caused the wrong register value to be read,
resulting in random LSB for fan speed values and limits.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
| -rw-r--r-- | drivers/hwmon/w83795.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/hwmon/w83795.c b/drivers/hwmon/w83795.c index b797b9ce2907..24e44245e548 100644 --- a/drivers/hwmon/w83795.c +++ b/drivers/hwmon/w83795.c @@ -272,7 +272,7 @@ static inline u16 in_to_reg(u8 index, u16 val) static inline unsigned long fan_from_reg(u16 val) { - if ((val >= 0xff0) || (val == 0)) + if ((val == 0xfff) || (val == 0)) return 0; return 1350000UL / val; } @@ -456,7 +456,7 @@ static struct w83795_data *w83795_update_device(struct device *dev) continue; data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4; data->fan[i] |= - (w83795_read(client, W83795_REG_VRLSB >> 4)) & 0x0F; + (w83795_read(client, W83795_REG_VRLSB) >> 4) & 0x0F; } /* Update temperature */ @@ -1940,11 +1940,11 @@ static int w83795_probe(struct i2c_client *client, data->fan_min[i] = w83795_read(client, W83795_REG_FAN_MIN_HL(i)) << 4; data->fan_min[i] |= - (w83795_read(client, W83795_REG_FAN_MIN_LSB(i) >> - W83795_REG_FAN_MIN_LSB_SHIFT(i))) & 0x0F; + (w83795_read(client, W83795_REG_FAN_MIN_LSB(i)) >> + W83795_REG_FAN_MIN_LSB_SHIFT(i)) & 0x0F; data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4; data->fan[i] |= - (w83795_read(client, W83795_REG_VRLSB >> 4)) & 0x0F; + (w83795_read(client, W83795_REG_VRLSB) >> 4) & 0x0F; } /* temperature and limits */ |