HID: roccat: cleanup of kovaplus module

Partially removed unneeded informations and data caching.
Moved code nearer to format of newer drivers.
Added "info" sysfs attribute to support device reset and deprecate other attributes.

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

4 files changed, 167 insertions, 163 deletions

diff --git a/Documentation/ABI/obsolete/sysfs-driver-hid-roccat-kovaplus b/Documentation/ABI/obsolete/sysfs-driver-hid-roccat-kovaplus
new file mode 100644
index 000000000000..4d9fb26292a2
--- /dev/null
+++ b/Documentation/ABI/obsolete/sysfs-driver-hid-roccat-kovaplus
@@ -0,0 +1,41 @@
+What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kovaplus/roccatkovaplus<minor>/actual_cpi
+Date:		January 2011
+Contact:	Stefan Achatz <erazor_de@users.sourceforge.net>
+Description:	The integer value of this attribute ranges from 1-4.
+		When read, this attribute returns the number of the active
+		cpi level.
+		This file is readonly.
+		Has never been used. If bookkeeping is done, it's done in userland tools.
+Users:		http://roccat.sourceforge.net
+
+What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kovaplus/roccatkovaplus<minor>/actual_sensitivity_x
+Date:		January 2011
+Contact:	Stefan Achatz <erazor_de@users.sourceforge.net>
+Description:	The integer value of this attribute ranges from 1-10.
+		When read, this attribute returns the number of the actual
+		sensitivity in x direction.
+		This file is readonly.
+		Has never been used. If bookkeeping is done, it's done in userland tools.
+Users:		http://roccat.sourceforge.net
+
+What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kovaplus/roccatkovaplus<minor>/actual_sensitivity_y
+Date:		January 2011
+Contact:	Stefan Achatz <erazor_de@users.sourceforge.net>
+Description:	The integer value of this attribute ranges from 1-10.
+		When read, this attribute returns the number of the actual
+		sensitivity in y direction.
+		This file is readonly.
+		Has never been used. If bookkeeping is done, it's done in userland tools.
+Users:		http://roccat.sourceforge.net
+
+What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kovaplus/roccatkovaplus<minor>/firmware_version
+Date:		January 2011
+Contact:	Stefan Achatz <erazor_de@users.sourceforge.net>
+Description:	When read, this file returns the raw integer version number of the
+		firmware reported by the mouse. Using the integer value eases
+		further usage in other programs. To receive the real version
+		number the decimal point has to be shifted 2 positions to the
+		left. E.g. a returned value of 121 means 1.21
+		This file is readonly.
+		Obsoleted by binary sysfs attribute "info".
+Users:		http://roccat.sourceforge.net
diff --git a/Documentation/ABI/testing/sysfs-driver-hid-roccat-kovaplus b/Documentation/ABI/testing/sysfs-driver-hid-roccat-kovaplus
index 20f937c9d84f..507f2c7321d5 100644
--- a/Documentation/ABI/testing/sysfs-driver-hid-roccat-kovaplus
+++ b/Documentation/ABI/testing/sysfs-driver-hid-roccat-kovaplus
@@ -1,12 +1,3 @@
-What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kovaplus/roccatkovaplus<minor>/actual_cpi
-Date:		January 2011
-Contact:	Stefan Achatz <erazor_de@users.sourceforge.net>
-Description:	The integer value of this attribute ranges from 1-4.
-		When read, this attribute returns the number of the active
-		cpi level.
-		This file is readonly.
-Users:		http://roccat.sourceforge.net
-
 What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kovaplus/roccatkovaplus<minor>/actual_profile
 Date:		January 2011
 Contact:	Stefan Achatz <erazor_de@users.sourceforge.net>
@@ -18,33 +9,12 @@ Description:	The integer value of this attribute ranges from 0-4.
 		active when the mouse is powered on.
 Users:		http://roccat.sourceforge.net
 
-What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kovaplus/roccatkovaplus<minor>/actual_sensitivity_x
-Date:		January 2011
-Contact:	Stefan Achatz <erazor_de@users.sourceforge.net>
-Description:	The integer value of this attribute ranges from 1-10.
-		When read, this attribute returns the number of the actual
-		sensitivity in x direction.
-		This file is readonly.
-Users:		http://roccat.sourceforge.net
-
-What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kovaplus/roccatkovaplus<minor>/actual_sensitivity_y
-Date:		January 2011
+What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kovaplus/roccatkovaplus<minor>/info
+Date:		November 2012
 Contact:	Stefan Achatz <erazor_de@users.sourceforge.net>
-Description:	The integer value of this attribute ranges from 1-10.
-		When read, this attribute returns the number of the actual
-		sensitivity in y direction.
-		This file is readonly.
-Users:		http://roccat.sourceforge.net
-
-What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kovaplus/roccatkovaplus<minor>/firmware_version
-Date:		January 2011
-Contact:	Stefan Achatz <erazor_de@users.sourceforge.net>
-Description:	When read, this file returns the raw integer version number of the
-		firmware reported by the mouse. Using the integer value eases
-		further usage in other programs. To receive the real version
-		number the decimal point has to be shifted 2 positions to the
-		left. E.g. a returned value of 121 means 1.21
-		This file is readonly.
+Description:	When read, this file returns general data like firmware version.
+		When written, the device can be reset.
+		The data is 6 bytes long.
 Users:		http://roccat.sourceforge.net
 
 What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kovaplus/roccatkovaplus<minor>/profile_buttons
diff --git a/drivers/hid/hid-roccat-kovaplus.c b/drivers/hid/hid-roccat-kovaplus.c
index ca6527ac655d..1589fd3bcf0f 100644
--- a/drivers/hid/hid-roccat-kovaplus.c
+++ b/drivers/hid/hid-roccat-kovaplus.c
@@ -70,13 +70,6 @@ static int kovaplus_select_profile(struct usb_device *usb_dev, uint number,
 	return kovaplus_send_control(usb_dev, number, request);
 }
 
-static int kovaplus_get_info(struct usb_device *usb_dev,
-		struct kovaplus_info *buf)
-{
-	return roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_INFO,
-			buf, sizeof(struct kovaplus_info));
-}
-
 static int kovaplus_get_profile_settings(struct usb_device *usb_dev,
 		struct kovaplus_profile_settings *buf, uint number)
 {
@@ -88,15 +81,7 @@ static int kovaplus_get_profile_settings(struct usb_device *usb_dev,
 		return retval;
 
 	return roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_PROFILE_SETTINGS,
-			buf, sizeof(struct kovaplus_profile_settings));
-}
-
-static int kovaplus_set_profile_settings(struct usb_device *usb_dev,
-		struct kovaplus_profile_settings const *settings)
-{
-	return roccat_common2_send_with_status(usb_dev,
-			KOVAPLUS_COMMAND_PROFILE_SETTINGS,
-			settings, sizeof(struct kovaplus_profile_settings));
+			buf, KOVAPLUS_SIZE_PROFILE_SETTINGS);
 }
 
 static int kovaplus_get_profile_buttons(struct usb_device *usb_dev,
@@ -110,15 +95,7 @@ static int kovaplus_get_profile_buttons(struct usb_device *usb_dev,
 		return retval;
 
 	return roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_PROFILE_BUTTONS,
-			buf, sizeof(struct kovaplus_profile_buttons));
-}
-
-static int kovaplus_set_profile_buttons(struct usb_device *usb_dev,
-		struct kovaplus_profile_buttons const *buttons)
-{
-	return roccat_common2_send_with_status(usb_dev,
-			KOVAPLUS_COMMAND_PROFILE_BUTTONS,
-			buttons, sizeof(struct kovaplus_profile_buttons));
+			buf, KOVAPLUS_SIZE_PROFILE_BUTTONS);
 }
 
 /* retval is 0-4 on success, < 0 on error */
@@ -147,122 +124,140 @@ static int kovaplus_set_actual_profile(struct usb_device *usb_dev,
 			&buf, sizeof(struct kovaplus_actual_profile));
 }
 
-static ssize_t kovaplus_sysfs_read_profilex_settings(struct file *fp,
-		struct kobject *kobj, struct bin_attribute *attr, char *buf,
-		loff_t off, size_t count)
+static ssize_t kovaplus_sysfs_read(struct file *fp, struct kobject *kobj,
+		char *buf, loff_t off, size_t count,
+		size_t real_size, uint command)
 {
 	struct device *dev =
 			container_of(kobj, struct device, kobj)->parent->parent;
 	struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
+	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
+	int retval;
 
-	if (off >= sizeof(struct kovaplus_profile_settings))
+	if (off >= real_size)
 		return 0;
 
-	if (off + count > sizeof(struct kovaplus_profile_settings))
-		count = sizeof(struct kovaplus_profile_settings) - off;
+	if (off != 0 || count != real_size)
+		return -EINVAL;
 
 	mutex_lock(&kovaplus->kovaplus_lock);
-	memcpy(buf, ((char const *)&kovaplus->profile_settings[*(uint *)(attr->private)]) + off,
-			count);
+	retval = roccat_common2_receive(usb_dev, command, buf, real_size);
 	mutex_unlock(&kovaplus->kovaplus_lock);
 
-	return count;
+	if (retval)
+		return retval;
+
+	return real_size;
 }
 
-static ssize_t kovaplus_sysfs_write_profile_settings(struct file *fp,
-		struct kobject *kobj, struct bin_attribute *attr, char *buf,
-		loff_t off, size_t count)
+static ssize_t kovaplus_sysfs_write(struct file *fp, struct kobject *kobj,
+		void const *buf, loff_t off, size_t count,
+		size_t real_size, uint command)
 {
 	struct device *dev =
 			container_of(kobj, struct device, kobj)->parent->parent;
 	struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
-	int retval = 0;
-	int difference;
-	int profile_index;
-	struct kovaplus_profile_settings *profile_settings;
+	int retval;
 
-	if (off != 0 || count != sizeof(struct kovaplus_profile_settings))
+	if (off != 0 || count != real_size)
 		return -EINVAL;
 
-	profile_index = ((struct kovaplus_profile_settings const *)buf)->profile_index;
-	profile_settings = &kovaplus->profile_settings[profile_index];
-
 	mutex_lock(&kovaplus->kovaplus_lock);
-	difference = memcmp(buf, profile_settings,
-			sizeof(struct kovaplus_profile_settings));
-	if (difference) {
-		retval = kovaplus_set_profile_settings(usb_dev,
-				(struct kovaplus_profile_settings const *)buf);
-		if (!retval)
-			memcpy(profile_settings, buf,
-					sizeof(struct kovaplus_profile_settings));
-	}
+	retval = roccat_common2_send_with_status(usb_dev, command,
+			buf, real_size);
 	mutex_unlock(&kovaplus->kovaplus_lock);
 
 	if (retval)
 		return retval;
 
-	return sizeof(struct kovaplus_profile_settings);
+	return real_size;
 }
 
-static ssize_t kovaplus_sysfs_read_profilex_buttons(struct file *fp,
-		struct kobject *kobj, struct bin_attribute *attr, char *buf,
-		loff_t off, size_t count)
-{
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
-	struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
+#define KOVAPLUS_SYSFS_W(thingy, THINGY) \
+static ssize_t kovaplus_sysfs_write_ ## thingy(struct file *fp, \
+		struct kobject *kobj, struct bin_attribute *attr, char *buf, \
+		loff_t off, size_t count) \
+{ \
+	return kovaplus_sysfs_write(fp, kobj, buf, off, count, \
+			KOVAPLUS_SIZE_ ## THINGY, KOVAPLUS_COMMAND_ ## THINGY); \
+}
 
-	if (off >= sizeof(struct kovaplus_profile_buttons))
-		return 0;
+#define KOVAPLUS_SYSFS_R(thingy, THINGY) \
+static ssize_t kovaplus_sysfs_read_ ## thingy(struct file *fp, \
+		struct kobject *kobj, struct bin_attribute *attr, char *buf, \
+		loff_t off, size_t count) \
+{ \
+	return kovaplus_sysfs_read(fp, kobj, buf, off, count, \
+			KOVAPLUS_SIZE_ ## THINGY, KOVAPLUS_COMMAND_ ## THINGY); \
+}
 
-	if (off + count > sizeof(struct kovaplus_profile_buttons))
-		count = sizeof(struct kovaplus_profile_buttons) - off;
+#define KOVAPLUS_SYSFS_RW(thingy, THINGY) \
+KOVAPLUS_SYSFS_W(thingy, THINGY) \
+KOVAPLUS_SYSFS_R(thingy, THINGY)
 
-	mutex_lock(&kovaplus->kovaplus_lock);
-	memcpy(buf, ((char const *)&kovaplus->profile_buttons[*(uint *)(attr->private)]) + off,
-			count);
-	mutex_unlock(&kovaplus->kovaplus_lock);
+#define KOVAPLUS_BIN_ATTRIBUTE_RW(thingy, THINGY) \
+{ \
+	.attr = { .name = #thingy, .mode = 0660 }, \
+	.size = KOVAPLUS_SIZE_ ## THINGY, \
+	.read = kovaplus_sysfs_read_ ## thingy, \
+	.write = kovaplus_sysfs_write_ ## thingy \
+}
+
+#define KOVAPLUS_BIN_ATTRIBUTE_R(thingy, THINGY) \
+{ \
+	.attr = { .name = #thingy, .mode = 0440 }, \
+	.size = KOVAPLUS_SIZE_ ## THINGY, \
+	.read = kovaplus_sysfs_read_ ## thingy, \
+}
 
-	return count;
+#define KOVAPLUS_BIN_ATTRIBUTE_W(thingy, THINGY) \
+{ \
+	.attr = { .name = #thingy, .mode = 0220 }, \
+	.size = KOVAPLUS_SIZE_ ## THINGY, \
+	.write = kovaplus_sysfs_write_ ## thingy \
 }
 
-static ssize_t kovaplus_sysfs_write_profile_buttons(struct file *fp,
+KOVAPLUS_SYSFS_RW(info, INFO)
+KOVAPLUS_SYSFS_W(profile_settings, PROFILE_SETTINGS)
+KOVAPLUS_SYSFS_W(profile_buttons, PROFILE_BUTTONS)
+
+static ssize_t kovaplus_sysfs_read_profilex_settings(struct file *fp,
 		struct kobject *kobj, struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count)
 {
 	struct device *dev =
 			container_of(kobj, struct device, kobj)->parent->parent;
-	struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
-	int retval = 0;
-	int difference;
-	uint profile_index;
-	struct kovaplus_profile_buttons *profile_buttons;
+	ssize_t retval;
 
-	if (off != 0 || count != sizeof(struct kovaplus_profile_buttons))
-		return -EINVAL;
+	retval = kovaplus_select_profile(usb_dev, *(uint *)(attr->private),
+			KOVAPLUS_CONTROL_REQUEST_PROFILE_SETTINGS);
+	if (retval)
+		return retval;
 
-	profile_index = ((struct kovaplus_profile_buttons const *)buf)->profile_index;
-	profile_buttons = &kovaplus->profile_buttons[profile_index];
+	return kovaplus_sysfs_read(fp, kobj, buf, off, count,
+			KOVAPLUS_SIZE_PROFILE_SETTINGS,
+			KOVAPLUS_COMMAND_PROFILE_SETTINGS);
+}
 
-	mutex_lock(&kovaplus->kovaplus_lock);
-	difference = memcmp(buf, profile_buttons,
-			sizeof(struct kovaplus_profile_buttons));
-	if (difference) {
-		retval = kovaplus_set_profile_buttons(usb_dev,
-				(struct kovaplus_profile_buttons const *)buf);
-		if (!retval)
-			memcpy(profile_buttons, buf,
-					sizeof(struct kovaplus_profile_buttons));
-	}
-	mutex_unlock(&kovaplus->kovaplus_lock);
+static ssize_t kovaplus_sysfs_read_profilex_buttons(struct file *fp,
+		struct kobject *kobj, struct bin_attribute *attr, char *buf,
+		loff_t off, size_t count)
+{
+	struct device *dev =
+			container_of(kobj, struct device, kobj)->parent->parent;
+	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
+	ssize_t retval;
 
+	retval = kovaplus_select_profile(usb_dev, *(uint *)(attr->private),
+			KOVAPLUS_CONTROL_REQUEST_PROFILE_BUTTONS);
 	if (retval)
 		return retval;
 
-	return sizeof(struct kovaplus_profile_buttons);
+	return kovaplus_sysfs_read(fp, kobj, buf, off, count,
+			KOVAPLUS_SIZE_PROFILE_BUTTONS,
+			KOVAPLUS_COMMAND_PROFILE_BUTTONS);
 }
 
 static ssize_t kovaplus_sysfs_show_actual_profile(struct device *dev,
@@ -342,9 +337,20 @@ static ssize_t kovaplus_sysfs_show_actual_sensitivity_y(struct device *dev,
 static ssize_t kovaplus_sysfs_show_firmware_version(struct device *dev,
 		struct device_attribute *attr, char *buf)
 {
-	struct kovaplus_device *kovaplus =
-			hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
-	return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->info.firmware_version);
+	struct kovaplus_device *kovaplus;
+	struct usb_device *usb_dev;
+	struct kovaplus_info info;
+
+	dev = dev->parent->parent;
+	kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
+	usb_dev = interface_to_usbdev(to_usb_interface(dev));
+
+	mutex_lock(&kovaplus->kovaplus_lock);
+	roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_INFO,
+			&info, KOVAPLUS_SIZE_INFO);
+	mutex_unlock(&kovaplus->kovaplus_lock);
+
+	return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version);
 }
 
 static struct device_attribute kovaplus_attributes[] = {
@@ -363,73 +369,66 @@ static struct device_attribute kovaplus_attributes[] = {
 };
 
 static struct bin_attribute kovaplus_bin_attributes[] = {
-	{
-		.attr = { .name = "profile_settings", .mode = 0220 },
-		.size = sizeof(struct kovaplus_profile_settings),
-		.write = kovaplus_sysfs_write_profile_settings
-	},
+	KOVAPLUS_BIN_ATTRIBUTE_RW(info, INFO),
+	KOVAPLUS_BIN_ATTRIBUTE_W(profile_settings, PROFILE_SETTINGS),
+	KOVAPLUS_BIN_ATTRIBUTE_W(profile_buttons, PROFILE_BUTTONS),
 	{
 		.attr = { .name = "profile1_settings", .mode = 0440 },
-		.size = sizeof(struct kovaplus_profile_settings),
+		.size = KOVAPLUS_SIZE_PROFILE_SETTINGS,
 		.read = kovaplus_sysfs_read_profilex_settings,
 		.private = &profile_numbers[0]
 	},
 	{
 		.attr = { .name = "profile2_settings", .mode = 0440 },
-		.size = sizeof(struct kovaplus_profile_settings),
+		.size = KOVAPLUS_SIZE_PROFILE_SETTINGS,
 		.read = kovaplus_sysfs_read_profilex_settings,
 		.private = &profile_numbers[1]
 	},
 	{
 		.attr = { .name = "profile3_settings", .mode = 0440 },
-		.size = sizeof(struct kovaplus_profile_settings),
+		.size = KOVAPLUS_SIZE_PROFILE_SETTINGS,
 		.read = kovaplus_sysfs_read_profilex_settings,
 		.private = &profile_numbers[2]
 	},
 	{
 		.attr = { .name = "profile4_settings", .mode = 0440 },
-		.size = sizeof(struct kovaplus_profile_settings),
+		.size = KOVAPLUS_SIZE_PROFILE_SETTINGS,
 		.read = kovaplus_sysfs_read_profilex_settings,
 		.private = &profile_numbers[3]
 	},
 	{
 		.attr = { .name = "profile5_settings", .mode = 0440 },
-		.size = sizeof(struct kovaplus_profile_settings),
+		.size = KOVAPLUS_SIZE_PROFILE_SETTINGS,
 		.read = kovaplus_sysfs_read_profilex_settings,
 		.private = &profile_numbers[4]
 	},
 	{
-		.attr = { .name = "profile_buttons", .mode = 0220 },
-		.size = sizeof(struct kovaplus_profile_buttons),
-		.write = kovaplus_sysfs_write_profile_buttons
-	},
-	{
 		.attr = { .name = "profile1_buttons", .mode = 0440 },
-		.size = sizeof(struct kovaplus_profile_buttons),
+		.size = KOVAPLUS_SIZE_PROFILE_BUTTONS,
 		.read = kovaplus_sysfs_read_profilex_buttons,
 		.private = &profile_numbers[0]
 	},
 	{
 		.attr = { .name = "profile2_buttons", .mode = 0440 },
-		.size = sizeof(struct kovaplus_profile_buttons),
+		.size = KOVAPLUS_SIZE_PROFILE_BUTTONS,
 		.read = kovaplus_sysfs_read_profilex_buttons,
 		.private = &profile_numbers[1]
 	},
 	{
 		.attr = { .name = "profile3_buttons", .mode = 0440 },
-		.size = sizeof(struct kovaplus_profile_buttons),
+		.size = KOVAPLUS_SIZE_PROFILE_BUTTONS,
 		.read = kovaplus_sysfs_read_profilex_buttons,
 		.private = &profile_numbers[2]
 	},
 	{
 		.attr = { .name = "profile4_buttons", .mode = 0440 },
-		.size = sizeof(struct kovaplus_profile_buttons),
+		.size = KOVAPLUS_SIZE_PROFILE_BUTTONS,
 		.read = kovaplus_sysfs_read_profilex_buttons,
 		.private = &profile_numbers[3]
 	},
 	{
 		.attr = { .name = "profile5_buttons", .mode = 0440 },
-		.size = sizeof(struct kovaplus_profile_buttons),
+		.size = KOVAPLUS_SIZE_PROFILE_BUTTONS,
 		.read = kovaplus_sysfs_read_profilex_buttons,
 		.private = &profile_numbers[4]
 	},
@@ -444,10 +443,6 @@ static int kovaplus_init_kovaplus_device_struct(struct usb_device *usb_dev,
 
 	mutex_init(&kovaplus->kovaplus_lock);
 
-	retval = kovaplus_get_info(usb_dev, &kovaplus->info);
-	if (retval)
-		return retval;
-
 	for (i = 0; i < 5; ++i) {
 		msleep(wait);
 		retval = kovaplus_get_profile_settings(usb_dev,
diff --git a/drivers/hid/hid-roccat-kovaplus.h b/drivers/hid/hid-roccat-kovaplus.h
index f82daa1cdcb9..1189573daee2 100644
--- a/drivers/hid/hid-roccat-kovaplus.h
+++ b/drivers/hid/hid-roccat-kovaplus.h
@@ -14,6 +14,12 @@
 
 #include <linux/types.h>
 
+enum {
+	KOVAPLUS_SIZE_INFO = 0x06,
+	KOVAPLUS_SIZE_PROFILE_SETTINGS = 0x10,
+	KOVAPLUS_SIZE_PROFILE_BUTTONS = 0x17,
+};
+
 enum kovaplus_control_requests {
 	/* write; value = profile number range 0-4 */
 	KOVAPLUS_CONTROL_REQUEST_PROFILE_SETTINGS = 0x10,
@@ -53,13 +59,6 @@ struct kovaplus_info {
 	uint8_t unknown[3];
 } __packed;
 
-/* writes 1 on plugin */
-struct kovaplus_a {
-	uint8_t command; /* KOVAPLUS_COMMAND_A */
-	uint8_t size; /* 3 */
-	uint8_t unknown;
-} __packed;
-
 enum kovaplus_commands {
 	KOVAPLUS_COMMAND_ACTUAL_PROFILE = 0x5,
 	KOVAPLUS_COMMAND_PROFILE_SETTINGS = 0x6,
@@ -125,7 +124,6 @@ struct kovaplus_device {
 	int roccat_claimed;
 	int chrdev_minor;
 	struct mutex kovaplus_lock;
-	struct kovaplus_info info;
 	struct kovaplus_profile_settings profile_settings[5];
 	struct kovaplus_profile_buttons profile_buttons[5];
 };