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-rw-r--r--drivers/hid/wacom_sys.c18
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
index a8b7f16f76fa..25086287957e 100644
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -110,12 +110,24 @@ static void wacom_feature_mapping(struct hid_device *hdev,
110{ 110{
111 struct wacom *wacom = hid_get_drvdata(hdev); 111 struct wacom *wacom = hid_get_drvdata(hdev);
112 struct wacom_features *features = &wacom->wacom_wac.features; 112 struct wacom_features *features = &wacom->wacom_wac.features;
113 u8 *data;
114 int ret;
113 115
114 switch (usage->hid) { 116 switch (usage->hid) {
115 case HID_DG_CONTACTMAX: 117 case HID_DG_CONTACTMAX:
116 /* leave touch_max as is if predefined */ 118 /* leave touch_max as is if predefined */
117 if (!features->touch_max) 119 if (!features->touch_max) {
118 features->touch_max = field->value[0]; 120 /* read manually */
121 data = kzalloc(2, GFP_KERNEL);
122 if (!data)
123 break;
124 data[0] = field->report->id;
125 ret = wacom_get_report(hdev, HID_FEATURE_REPORT,
126 data, 2, 0);
127 if (ret == 2)
128 features->touch_max = data[1];
129 kfree(data);
130 }
119 break; 131 break;
120 } 132 }
121} 133}
@@ -1280,6 +1292,8 @@ static int wacom_probe(struct hid_device *hdev,
1280 if (!id->driver_data) 1292 if (!id->driver_data)
1281 return -EINVAL; 1293 return -EINVAL;
1282 1294
1295 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1296
1283 wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL); 1297 wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
1284 if (!wacom) 1298 if (!wacom)
1285 return -ENOMEM; 1299 return -ENOMEM;