Steven Noonan wrote:
quoted text
> On Sat, Oct 18, 2008 at 10:29 AM, Justin Mattock
> <justinmattock@gmail.com> wrote:
>> On Sat, Oct 18, 2008 at 9:44 AM, Steven Noonan <steven@uplinklabs.net> wrote:
>>> 2008/10/18 Sven Anders <anders@anduras.de>:
>>>> Steven Noonan schrieb:
>>>>> It seems that the appletouch driver is (sporadically) not detecting my
>>>>> Apple Trackpad anymore on Linus' current tree (2.6.27-05577-g0cfd810).
>>>>> When it is misbehaving, it doesn't have any /dev/input/event* entry
>>>>> that corresponds to the input from appletouch, and dmesg -should- show
>>>>> the following, as 2.6.27.1 does, but does not:
>>>>>
>>>>> appletouch: Geyser mode initialized.
>>>>> input: appletouch as /class/input/input4
>>>>> usbcore: registered new interface driver appletouch
>>>>> appletouch: 17" model detected
>>>>>
>>>>> On the current tree, occasionally all I get is:
>>>>>
>>>>> usbcore: registered new interface driver appletouch
[...]
quoted text
> Any ideas, gentlemen?

Yeah, I see the problem. The device is grabbed by the hid bus and not
released even if apple driver says ENODEV (this is expected behaviour
and noted in the driver).

Could you try this patch? (Not ready for merge, it needs to be cleaned
up.)

---
 drivers/hid/hid-core.c |   34 ++++++++++++++++++++++++++++++++++
 1 files changed, 34 insertions(+), 0 deletions(-)

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 8a7d9db..94cf1db 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1539,6 +1539,34 @@ static const struct hid_device_id hid_ignore_list[] = {
 	{ }
 };
 
+static const struct hid_device_id hid_mouse_ignore_list[] = {
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
+	{ }
+};
+
+#include <linux/usb.h>
+
 static bool hid_ignore(struct hid_device *hdev)
 {
 	switch (hdev->vendor) {
@@ -1555,6 +1583,12 @@ static bool hid_ignore(struct hid_device *hdev)
 		break;
 	}
 
+	if (hdev->bus == BUS_USB && to_usb_interface(hdev->dev.parent)->
+			cur_altsetting->desc.bInterfaceProtocol ==
+			USB_INTERFACE_PROTOCOL_MOUSE &&
+			hid_match_id(hdev, hid_mouse_ignore_list))
+		return true;
+
 	return !!hid_match_id(hdev, hid_ignore_list);
 }
 
-- 
1.6.0.2

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