HID: fix horizontal wheel for ms comfort mouse 4500

Microsoft comfort mouse 4500 report descriptor contains duplicate
usages for horizontal wheel. This patch fixes the wrong mapping
caused by that.

Signed-off-by: Ari Savolainen <ari.m.savolainen@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 21 insertions, 5 deletions

diff --git a/drivers/hid/hid-microsoft.c b/drivers/hid/hid-microsoft.c
index df91791f88d3..e5c699b6c6f3 100644
--- a/drivers/hid/hid-microsoft.c
+++ b/drivers/hid/hid-microsoft.c
@@ -23,11 +23,12 @@
 
 #include "hid-ids.h"
 
-#define MS_HIDINPUT     0x01
-#define MS_ERGONOMY     0x02
-#define MS_PRESENTER    0x04
-#define MS_RDESC        0x08
-#define MS_NOGET        0x10
+#define MS_HIDINPUT             0x01
+#define MS_ERGONOMY             0x02
+#define MS_PRESENTER            0x04
+#define MS_RDESC                0x08
+#define MS_NOGET                0x10
+#define MS_DUPLICATE_USAGES     0x20
 
 /*
  * Microsoft Wireless Desktop Receiver (Model 1028) has
@@ -109,6 +110,18 @@ static int ms_input_mapping(struct hid_device *hdev, struct hid_input *hi,
         return 0;
 }
 
+static int ms_input_mapped(struct hid_device *hdev, struct hid_input *hi,
+                struct hid_field *field, struct hid_usage *usage,
+                unsigned long **bit, int *max)
+{
+        unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
+
+        if (quirks & MS_DUPLICATE_USAGES)
+                clear_bit(usage->code, *bit);
+
+        return 0;
+}
+
 static int ms_event(struct hid_device *hdev, struct hid_field *field,
                 struct hid_usage *usage, __s32 value)
 {
@@ -183,6 +196,8 @@ static const struct hid_device_id ms_devices[] = {
                 .driver_data = MS_ERGONOMY },
         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0),
                 .driver_data = MS_NOGET },
+        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500),
+                .driver_data = MS_DUPLICATE_USAGES },
 
         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT),
                 .driver_data = MS_PRESENTER },
@@ -195,6 +210,7 @@ static struct hid_driver ms_driver = {
         .id_table = ms_devices,
         .report_fixup = ms_report_fixup,
         .input_mapping = ms_input_mapping,
+        .input_mapped = ms_input_mapped,
         .event = ms_event,
         .probe = ms_probe,
 };