linux-kernel - Re: [4.12 regression] Thinkpad X250 Touchpad and Trackpoint not recognized anymore; commit e839ffa: "Input: synaptics

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Date:   Fri, 19 May 2017 21:37:32 +0200
From:   Pascal Wichmann <pascal.wichmann@...w.de>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>
Cc:     linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [4.12 regression] Thinkpad X250 Touchpad and Trackpoint not
 recognized anymore; commit e839ffa: "Input: synaptics - add support for
 Intertouch devices"

> Do you have i801_smbus driver enabled and loaded?

I have the following line in my kernel configuration:

> CONFIG_I2C_I801=m

Following i2c/smbus-related modules are loaded:

> lsmod | grep i2c
                                                                :(
> i2c_smbus              16384  0
> i2c_i801               24576  0
> i2c_algo_bit           16384  1 i915

lshw has the following output specifying i801_smbus as driver:

> *-serial
>      description: SMBus
>      product: Wildcat Point-LP SMBus Controller
>      vendor: Intel Corporation
>      physical id: 1f.3
>      bus info: pci@...0:00:1f.3
>      version: 03
>      width: 64 bits
>      clock: 33MHz
>      configuration: driver=i801_smbus latency=0
>      resources: irq:18 memory:f1238000-f12380ff ioport:efa0(size=32)


Thanks,
Pascal




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