SYN1B7F:00 06CB:2970 UNKNOWN does not work with Kernel 4.2.x anymore

[Roman]

The Touchpad of my Acer VN7-571G doesn't work under the mainline Kernel anymore.

I: Bus=0018 Vendor=06cb Product=2970 Version=0100
N: Name="SYN1B7F:00 06CB:2970 UNKNOWN"
P: Phys=
S: Sysfs=/devices/pci0000:00/INT3433:00/i2c-0/i2c-SYN1B7F:00/0018:06CB:2970.0001/input/input7
U: Uniq=
H: Handlers=mouse0 event7

There were always some errors in dmesg, but the touchpad worked nice. Booting with the new mainline Kernels, it crashes.
I attach some reports of a self written test for a variety of Kernels.
The test contains the output of:

dmesg | grep i2c
dmesg | grep hid
xinput

[Roman (romanbn)]

On this self compiled kernel from the ath tree, i reverted the only commit regarding this topic:

diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c
index 92d6cdf..0dfb5d1 100644
--- a/drivers/hid/i2c-hid/i2c-hid.c
+++ b/drivers/hid/i2c-hid/i2c-hid.c
@@ -1019,7 +1019,6 @@ static int i2c_hid_probe(struct i2c_client *client,
  hid->driver_data = client;
  hid->ll_driver = &i2c_hid_ll_driver;
  hid->dev.parent = &client->dev;
- ACPI_COMPANION_SET(&hid->dev, ACPI_COMPANION(&client->dev));
  hid->bus = BUS_I2C;
  hid->version = le16_to_cpu(ihid->hdesc.bcdVersion);
  hid->vendor = le16_to_cpu(ihid->hdesc.wVendorID);

But the Touchpad still doesnt work.

[Joseph Salisbury (jsalisbury)]

This issue appears to be an upstream bug, since you tested the latest upstream kernel. Would it be possible for you to open an upstream bug report[0]? That will allow the upstream Developers to examine the issue, and may provide a quicker resolution to the bug.

Please follow the instructions on the wiki page[0]. The first step is to email the appropriate mailing list. If no response is received, then a bug may be opened on bugzilla.kernel.org.

Once this bug is reported upstream, please add the tag: 'kernel-bug-reported-upstream'.

[0] https://wiki.ubuntu.com/Bugs/Upstream/kernel

[Roman (romanbn)]

Sadly no response to my bug report on the mailing list:

http://www.spinics.net/lists/linux-input/msg40091.html

I think linux-input is the right one...

[Roman (romanbn)]

Due to the touchpad works with the new kernels. I mark this bug as 'fix released'