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[1/7,v3] HID: magicmouse: don't allow hidinput to initialize the device

Message ID 1283306184-28833-2-git-send-email-chase.douglas@canonical.com (mailing list archive)
State Rejected
Headers show

Commit Message

Chase Douglas Sept. 1, 2010, 1:56 a.m. UTC
None
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Patch

diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c
index 319b0e5..d38b529 100644
--- a/drivers/hid/hid-magicmouse.c
+++ b/drivers/hid/hid-magicmouse.c
@@ -404,15 +404,20 @@  static int magicmouse_probe(struct hid_device *hdev,
 		goto err_free;
 	}
 
-	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
+	/* When registering a hid device, one of hidinput, hidraw, or hiddev
+	 * subsystems must claim the device. We are bypassing hidinput due to
+	 * our raw event processing, and hidraw and hiddev may not claim the
+	 * device. We get around this by telling hid_hw_start that input has
+	 * claimed the device already, and then flipping the bit back.
+	 */
+	hdev->claimed = HID_CLAIMED_INPUT;
+	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_HIDINPUT);
+	hdev->claimed &= ~HID_CLAIMED_INPUT;
 	if (ret) {
 		dev_err(&hdev->dev, "magicmouse hw start failed\n");
 		goto err_free;
 	}
 
-	/* we are handling the input ourselves */
-	hidinput_disconnect(hdev);
-
 	report = hid_register_report(hdev, HID_INPUT_REPORT, TOUCH_REPORT_ID);
 	if (!report) {
 		dev_err(&hdev->dev, "unable to register touch report\n");