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path: root/drivers/hid/hid-magicmouse.c
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Diffstat (limited to 'drivers/hid/hid-magicmouse.c')
-rw-r--r--drivers/hid/hid-magicmouse.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c
index 318cc40df92d..a5eda4c8127a 100644
--- a/drivers/hid/hid-magicmouse.c
+++ b/drivers/hid/hid-magicmouse.c
@@ -76,7 +76,7 @@ MODULE_PARM_DESC(report_undeciphered, "Report undeciphered multi-touch state fie
* This is true when single_touch_id is equal to NO_TOUCHES. If multiple touches
* are down and the touch providing for single touch emulation is lifted,
* single_touch_id is equal to SINGLE_TOUCH_UP. While single touch emulation is
- * occuring, single_touch_id corresponds with the tracking id of the touch used.
+ * occurring, single_touch_id corresponds with the tracking id of the touch used.
*/
#define NO_TOUCHES -1
#define SINGLE_TOUCH_UP -2
@@ -418,6 +418,8 @@ static void magicmouse_setup_input(struct input_dev *input, struct hid_device *h
input_set_abs_params(input, ABS_MT_POSITION_Y, -2456,
2565, 4, 0);
}
+
+ input_set_events_per_packet(input, 60);
}
if (report_undeciphered) {
@@ -499,9 +501,17 @@ static int magicmouse_probe(struct hid_device *hdev,
}
report->size = 6;
+ /*
+ * The device reponds 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) {
hid_err(hdev, "unable to request touch data (%d)\n", ret);
goto err_stop_hw;
}