reassign 678798 src:linux 3.2.21-1
found 678798 linux-2.6/3.4.1-1~experimental.1
found 678798 linux-2.6/3.2.18-1
tags 678798 + upstream patch moreinfo
quit
Hi,
Harishankar wrote:
> Wacom input driver no longer works. I no longer am able to get
> touchscreen or the pen tablet to work.
Thanks for reporting it. Presumably that is USB id 056a:00e3, or in
other words a Wacom ISDv4 E3 (TPC2FG). There is a patch in
development that should fix this.
Please test the attached patch.
Other useful information would be:
- the version you are testing with (you can get it with
"dpkg-query -W linux-image-$(uname -r)" or from between the
parentheses in "cat /proc/version" output)
- "lsusb -v" output describing the tablet
- full "dmesg" output from booting and reproducing the problem.
Instructions for testing patches:
0. prerequisites:
apt-get install git build-essential
1. get the kernel history, if you don't already have it:
git clone \
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
2. configure, build, test:
cd linux
git fetch origin
git checkout origin/master
cp /boot/config-$(uname -r) .config; # current configuration
scripts/config --disable DEBUG_INFO
make localmodconfig; # optional: minimize configuration
scripts/config --module TABLET_USB_WACOM
make deb-pkg; # optionally with -j<num> for parallel build
dpkg -i ../<name of package>; # as root
reboot
... test test test ...
Hopefully it reproduces the bug. So
3. try the patch:
cd linux
git am -3sc /path/to/the/patch
make deb-pkg; # maybe with -j4
dpkg -i ../<name of package>; # as root
reboot
... test test test ...
Thanks for the heads up and hope that helps,
Jonathan
From: Ping Cheng <pi...@wacom.com>
Date: Sun, 24 Jun 2012 09:48:03 -0500
Subject: wacom: patch for testing
When rep_data was an array
unsigned char rep_data[2];
spelling its address as &rep_data was perfectly valid, but now that
it is dynamically allocated
unsigned char *rep_data = kmalloc(2, GFP_KERNEL);
that expression returns a pointer to the pointer rather than to the
array itself. Regression introduced by commit f393ee2b814e (Input:
wacom - retrieve maximum number of touch points, 2012-04-29).
---
drivers/input/tablet/wacom_sys.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c
index cad5602d3ce4..6b1cd71ba320 100644
--- a/drivers/input/tablet/wacom_sys.c
+++ b/drivers/input/tablet/wacom_sys.c
@@ -216,7 +216,7 @@ static void wacom_retrieve_report_data(struct usb_interface
*intf,
rep_data[0] = 12;
result = wacom_get_report(intf, WAC_HID_FEATURE_REPORT,
- rep_data[0], &rep_data, 2,
+ rep_data[0], rep_data, 2,
WAC_MSG_RETRIES);
if (result >= 0 && rep_data[1] > 2)
--
1.7.11.rc3
