---

yaml --- r: 263677 b: refs/heads/master c: 35d851d h: refs/heads/master i: 263675: c926da7 v: v3
git-mirror · Aug 25, 2011 · 901d748 · 901d748
1 parent cfe6a31
commit 901d748
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Showing 2 changed files with 10 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4f6fdf08681cecd9f38499de7a02eb4f05f399a7
+refs/heads/master: 35d851df23b093ee027f827fed2213ae5e88fc7a
diff --git a/trunk/drivers/hid/hid-magicmouse.c b/trunk/drivers/hid/hid-magicmouse.c
@@ -537,9 +537,17 @@ static int magicmouse_probe(struct hid_device *hdev,
 	}
 	report->size = 6;
 
+	/*
+	 * Some devices repond with 'invalid report id' when feature
+	 * report switching it into multitouch mode is sent to it.
+	 *
+	 * This results in -EIO from the _raw low-level transport callback,
+	 * but there seems to be no other way of switching the mode.
+	 * Thus the super-ugly hacky success check below.
+	 */
 	ret = hdev->hid_output_raw_report(hdev, feature, sizeof(feature),
 			HID_FEATURE_REPORT);
-	if (ret != sizeof(feature)) {
+	if (ret != -EIO && ret != sizeof(feature)) {
 		hid_err(hdev, "unable to request touch data (%d)\n", ret);
 		goto err_stop_hw;
 	}