[regression] synaptics-rmi4: Failed to read the Control Register Descriptor: EIO
From: David Heidelberg <david@ixit.cz>
Date: 2026-06-26 21:10:03
Also in:
linux-next
With next-20260626 without any additional patches, the synaptics fails on OnePlus 6T with:
[ 16.620292] rmi4_i2c 12-0020: registering I2C-connected sensor
[ 16.857617] rmi4_f01 rmi4-00.fn01: found RMI device, manufacturer: Synaptics,
product: S3706B, fw id: 2852315
[ 16.867324] rmi4_f12 rmi4-00.fn12: Failed to read the Control Register
Descriptor: -5
[ 16.867338] rmi4_f12 rmi4-00.fn12: probe with driver rmi4_f12 failed with
error -5
I assume it's due to refactoring. My best guess it's signed/unsigned 32/64bit type changes, but since I haven't figured it out within reasonable timeframe. David