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authorLinus Torvalds <torvalds@linux-foundation.org>2012-12-27 10:46:47 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-27 10:46:47 -0800
commit101e5c7470eb7f77ae87f966b9155f0dbb5b4698 (patch)
tree151e031713daa8cfe0d06586d30c5c3699d45dd0
parentddf75ae34e61bc8472f8b54281ad29bc87274be1 (diff)
parent86266ca0e23b2b8e7e38edda1675cd085a9abc14 (diff)
downloadconfigs-101e5c7470eb7f77ae87f966b9155f0dbb5b4698.tar.gz
Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck: - Report i2c errors to userspace in lm73 driver - Fix problem with DIV_ROUND_CLOSEST and unsigned divisors in emc6w201 driver * tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (emc6w201) Fix DIV_ROUND_CLOSEST problem with unsigned divisors hwmon: (lm73} Detect and report i2c bus errors
-rw-r--r--drivers/hwmon/emc6w201.c2
-rw-r--r--drivers/hwmon/lm73.c16
2 files changed, 12 insertions, 6 deletions
diff --git a/drivers/hwmon/emc6w201.c b/drivers/hwmon/emc6w201.c
index a98c917b588..789bd4fb329 100644
--- a/drivers/hwmon/emc6w201.c
+++ b/drivers/hwmon/emc6w201.c
@@ -187,7 +187,7 @@ static struct emc6w201_data *emc6w201_update_device(struct device *dev)
* Sysfs callback functions
*/
-static const u16 nominal_mv[6] = { 2500, 1500, 3300, 5000, 1500, 1500 };
+static const s16 nominal_mv[6] = { 2500, 1500, 3300, 5000, 1500, 1500 };
static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
char *buf)
diff --git a/drivers/hwmon/lm73.c b/drivers/hwmon/lm73.c
index 8fa2632cbba..7272176a9ec 100644
--- a/drivers/hwmon/lm73.c
+++ b/drivers/hwmon/lm73.c
@@ -49,6 +49,7 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *da,
struct i2c_client *client = to_i2c_client(dev);
long temp;
short value;
+ s32 err;
int status = kstrtol(buf, 10, &temp);
if (status < 0)
@@ -57,8 +58,8 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *da,
/* Write value */
value = (short) SENSORS_LIMIT(temp/250, (LM73_TEMP_MIN*4),
(LM73_TEMP_MAX*4)) << 5;
- i2c_smbus_write_word_swapped(client, attr->index, value);
- return count;
+ err = i2c_smbus_write_word_swapped(client, attr->index, value);
+ return (err < 0) ? err : count;
}
static ssize_t show_temp(struct device *dev, struct device_attribute *da,
@@ -66,11 +67,16 @@ static ssize_t show_temp(struct device *dev, struct device_attribute *da,
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
struct i2c_client *client = to_i2c_client(dev);
+ int temp;
+
+ s32 err = i2c_smbus_read_word_swapped(client, attr->index);
+ if (err < 0)
+ return err;
+
/* use integer division instead of equivalent right shift to
guarantee arithmetic shift and preserve the sign */
- int temp = ((s16) (i2c_smbus_read_word_swapped(client,
- attr->index))*250) / 32;
- return sprintf(buf, "%d\n", temp);
+ temp = (((s16) err) * 250) / 32;
+ return scnprintf(buf, PAGE_SIZE, "%d\n", temp);
}