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authorPing Cheng <pingc@wacom.com>2009-04-28 07:49:54 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2009-04-28 09:32:38 -0700
commit384318ecd2eb4fdbcbe7c4df6e8bb55986bf52d4 (patch)
tree537f086b25e5ef41ac2db5cfa108bcd990c07977 /drivers/input/tablet
parent6b9ff696ba1176b6fca78d01fc590dd4335c8743 (diff)
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')
-rw-r--r--drivers/input/tablet/wacom.h5
-rw-r--r--drivers/input/tablet/wacom_sys.c13
2 files changed, 14 insertions, 4 deletions
diff --git a/drivers/input/tablet/wacom.h b/drivers/input/tablet/wacom.h
index 677680e9f54f..9710bfd49cf9 100644
--- a/drivers/input/tablet/wacom.h
+++ b/drivers/input/tablet/wacom.h
@@ -11,7 +11,7 @@
* Copyright (c) 2000 Daniel Egger <egger@suse.de>
* Copyright (c) 2001 Frederic Lepied <flepied@mandrakesoft.com>
* Copyright (c) 2004 Panagiotis Issaris <panagiotis.issaris@mech.kuleuven.ac.be>
- * Copyright (c) 2002-2008 Ping Cheng <pingc@wacom.com>
+ * Copyright (c) 2002-2009 Ping Cheng <pingc@wacom.com>
*
* ChangeLog:
* v0.1 (vp) - Initial release
@@ -67,6 +67,7 @@
* v1.47 (pc) - Added support for Bamboo
* v1.48 (pc) - Added support for Bamboo1, BambooFun, and Cintiq 12WX
* v1.49 (pc) - Added support for USB Tablet PC (0x90, 0x93, and 0x9A)
+ * v1.50 (pc) - Fixed a TabletPC touch bug in 2.6.28
*/
/*
@@ -87,7 +88,7 @@
/*
* Version Information
*/
-#define DRIVER_VERSION "v1.49"
+#define DRIVER_VERSION "v1.50"
#define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>"
#define DRIVER_DESC "USB Wacom Graphire and Wacom Intuos tablet driver"
#define DRIVER_LICENSE "GPL"
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)) {