HID: roccat: remove obsolete kone_abi_version sysfs attribute

The newest version of the accompanying userland tools cuts backward
compatibility and uses libudev to find its devices superseding the
quirky kone_abi_version sysfs attribute. Therefore it should be removed.

Signed-off-by: Stefan Achatz <erazor_de@users.sourceforge.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

2 files changed, 0 insertions, 18 deletions

diff --git a/drivers/hid/hid-roccat-kone.c b/drivers/hid/hid-roccat-kone.c
index 2aef6e4caf4..f77695762cb 100644
--- a/drivers/hid/hid-roccat-kone.c
+++ b/drivers/hid/hid-roccat-kone.c
@@ -618,18 +618,6 @@ static ssize_t kone_sysfs_set_startup_profile(struct device *dev,
 }
 
 /*
- * This file is used by userland software to find devices that are handled by
- * this driver. This provides a consistent way for actual and older kernels
- * where this driver replaced usbhid instead of generic-usb.
- * Driver capabilities are determined by returned number.
- */
-static ssize_t kone_sysfs_show_abi_version(struct device *dev,
-                struct device_attribute *attr, char *buf)
-{
-        return snprintf(buf, PAGE_SIZE, ROCCAT_KONE_ABI_VERSION "\n");
-}
-
-/*
  * Read actual dpi settings.
  * Returns raw value for further processing. Refer to enum kone_polling_rates to
  * get real value.
@@ -666,9 +654,6 @@ static DEVICE_ATTR(startup_profile, 0660,
                 kone_sysfs_show_startup_profile,
                 kone_sysfs_set_startup_profile);
 
-static DEVICE_ATTR(kone_abi_version, 0440,
-                kone_sysfs_show_abi_version, NULL);
-
 static struct attribute *kone_attributes[] = {
                 &dev_attr_actual_dpi.attr,
                 &dev_attr_actual_profile.attr,
@@ -676,7 +661,6 @@ static struct attribute *kone_attributes[] = {
                 &dev_attr_firmware_version.attr,
                 &dev_attr_tcu.attr,
                 &dev_attr_startup_profile.attr,
-                &dev_attr_kone_abi_version.attr,
                 NULL
 };
 
diff --git a/drivers/hid/hid-roccat-kone.h b/drivers/hid/hid-roccat-kone.h
index 71b14fa40dc..130d6566ea8 100644
--- a/drivers/hid/hid-roccat-kone.h
+++ b/drivers/hid/hid-roccat-kone.h
@@ -14,8 +14,6 @@
 
 #include <linux/types.h>
 
-#define ROCCAT_KONE_ABI_VERSION "1"
-
 #pragma pack(push)
 #pragma pack(1)