HID: sensor: fix attributes in HID sensor interface

User is unable to access to input-X-yyy and feature-X-yyy where
X is a hex value and more than 9 (e.g. input-a-yyy, feature-b-yyy) in HID
sensor custom sysfs interface.
This is because when creating the attribute, the attribute index is
written to using %x (hex). However, when reading and writing values into
the attribute, the attribute index is scanned using %d (decimal). Hence,
user is unable to access to attributes with index in hex values
(e.g. 'a', 'b', 'c') but able to access to attributes with index in
decimal values (e.g. 1, 2, 3,..).
This fix will change input-%d-%x-%s and feature-%d-%x-%s to input-%x-%x-%s
and feature-%x-%x-%s in show_values() and store_values() accordingly.

Signed-off-by: Ooi, Joyce <joyce.ooi@intel.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/hid-sensor-custom.c b/drivers/hid/hid-sensor-custom.c
index 5614fee82347f34b0ad96d906d800d3de7906052..3a84aaf1418b45c725531903b41e29ae4ce62236 100644 (file)
--- a/drivers/hid/hid-sensor-custom.c
+++ b/drivers/hid/hid-sensor-custom.c
@@ -292,11 +292,11 @@ static ssize_t show_value(struct device *dev, struct device_attribute *attr,
        bool input = false;
        int value = 0;
 
-       if (sscanf(attr->attr.name, "feature-%d-%x-%s", &index, &usage,
+       if (sscanf(attr->attr.name, "feature-%x-%x-%s", &index, &usage,
                   name) == 3) {
                feature = true;
                field_index = index + sensor_inst->input_field_count;
-       } else if (sscanf(attr->attr.name, "input-%d-%x-%s", &index, &usage,
+       } else if (sscanf(attr->attr.name, "input-%x-%x-%s", &index, &usage,
                   name) == 3) {
                input = true;
                field_index = index;
@@ -398,7 +398,7 @@ static ssize_t store_value(struct device *dev, struct device_attribute *attr,
        char name[HID_CUSTOM_NAME_LENGTH];
        int value;
 
-       if (sscanf(attr->attr.name, "feature-%d-%x-%s", &index, &usage,
+       if (sscanf(attr->attr.name, "feature-%x-%x-%s", &index, &usage,
                   name) == 3) {
                field_index = index + sensor_inst->input_field_count;
        } else