diff options
| author | Ping Cheng <pingc@wacom.com> | 2009-04-28 18:49:54 +0400 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2009-04-28 20:32:38 +0400 |
| commit | 384318ecd2eb4fdbcbe7c4df6e8bb55986bf52d4 (patch) | |
| tree | 537f086b25e5ef41ac2db5cfa108bcd990c07977 /drivers/input/tablet/wacom_sys.c | |
| parent | 6b9ff696ba1176b6fca78d01fc590dd4335c8743 (diff) | |
| download | linux-384318ecd2eb4fdbcbe7c4df6e8bb55986bf52d4.tar.xz | |
Input: wacom - fix TabletPC touch bug
This patch fixed a bug that was introduced in kernel 2.6.28 for
TabletPC touch data. The wacom_parse_hid routine in wacom_sys.c
should always return 0 even when usb_control_msg got an error.
Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/tablet/wacom_sys.c')
| -rw-r--r-- | drivers/input/tablet/wacom_sys.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c index 484496daa0f3..b8624f27abf9 100644 --- a/drivers/input/tablet/wacom_sys.c +++ b/drivers/input/tablet/wacom_sys.c @@ -289,6 +289,7 @@ static int wacom_parse_hid(struct usb_interface *intf, struct hid_descriptor *hi 5000); /* 5 secs */ } while (result < 0 && limit++ < 5); + /* No need to parse the Descriptor. It isn't an error though */ if (result < 0) goto out; @@ -368,9 +369,8 @@ static int wacom_parse_hid(struct usb_interface *intf, struct hid_descriptor *hi } } - result = 0; - out: + result = 0; kfree(report); return result; } @@ -425,6 +425,15 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i endpoint = &intf->cur_altsetting->endpoint[0].desc; + /* Initialize touch_x_max and touch_y_max in case it is not defined */ + if (wacom_wac->features->type == TABLETPC) { + features->touch_x_max = 1023; + features->touch_y_max = 1023; + } else { + features->touch_x_max = 0; + features->touch_y_max = 0; + } + /* TabletPC need to retrieve the physical and logical maximum from report descriptor */ if (wacom_wac->features->type == TABLETPC) { if (usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc)) { |