On 03/18/2015 08:47 AM, Cédric Le Goater wrote:
It simplifies the create_hwmon_attr_name() routine and it clearly isolates the conversion done between the OPAL node names and hwmon attributes names. Signed-off-by: Cédric Le Goater <clg@xxxxxxxxxx> --- drivers/hwmon/ibmpowernv.c | 39 +++++++++++++++++++++++++-------------- 1 file changed, 25 insertions(+), 14 deletions(-) diff --git a/drivers/hwmon/ibmpowernv.c b/drivers/hwmon/ibmpowernv.c index 07a8219b7f4e..edcc4ffa5ad0 100644 --- a/drivers/hwmon/ibmpowernv.c +++ b/drivers/hwmon/ibmpowernv.c @@ -127,6 +127,28 @@ static int get_sensor_index_attr(const char *name, u32 *index, return 0; } +static const char *convert_opal_attr_name(enum sensors type, + const char *opal_attr)
Would be great if you could align all the continuation lines with '('.
+{ + const char *attr_name = NULL; + + if (!strcmp(opal_attr, DT_FAULT_ATTR_SUFFIX)) { + attr_name = "fault"; + } else if (!strcmp(opal_attr, DT_DATA_ATTR_SUFFIX)) { + attr_name = "input"; + } else if (!strcmp(opal_attr, DT_THRESHOLD_ATTR_SUFFIX)) { + if (type == TEMP) + attr_name = "max"; + else if (type == FAN) + attr_name = "min"; + else + return NULL; + } else { + return NULL; + }
Those else cases returning NULL are unnecessary; attr_name is already initialized with NULL, so you can just return it.
+ return attr_name; +} + /* * This function translates the DT node name into the 'hwmon' attribute name. * IBMPOWERNV device node appear like cooling-fan#2-data, amb-temp#1-thrs etc. @@ -138,7 +160,7 @@ static int create_hwmon_attr_name(struct device *dev, enum sensors type, char *hwmon_attr_name) { char attr_suffix[MAX_ATTR_LEN]; - char *attr_name; + const char *attr_name; u32 index; int err; @@ -149,20 +171,9 @@ static int create_hwmon_attr_name(struct device *dev, enum sensors type, return err; } - if (!strcmp(attr_suffix, DT_FAULT_ATTR_SUFFIX)) { - attr_name = "fault"; - } else if (!strcmp(attr_suffix, DT_DATA_ATTR_SUFFIX)) { - attr_name = "input"; - } else if (!strcmp(attr_suffix, DT_THRESHOLD_ATTR_SUFFIX)) { - if (type == TEMP) - attr_name = "max"; - else if (type == FAN) - attr_name = "min"; - else - return -ENOENT; - } else { + attr_name = convert_opal_attr_name(type, attr_suffix); + if (!attr_name) return -ENOENT; - } snprintf(hwmon_attr_name, MAX_ATTR_LEN, "%s%d_%s", sensor_groups[type].name, index, attr_name);
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