The Dell Latitude E7450 uses IRQ 18 for the accelerometer, but also claims that the SMBus uses IRQ 18. This will result in: i801_smbus 0000:00:1f.3: PCI INT C: failed to register GSI i801_smbus 0000:00:1f.3: Failed to enable SMBus PCI device (-16) i801_smbus: probe of 0000:00:1f.3 failed with error -16 Force the SMBus IRQ to IRQ_NOTCONNECTED in this case, so that we fall back to polling, which also seems to be what the (very dated) Windows 7 drivers on the Dell Latitude E7450 do. This was tested on Dell Latitude E7450. I chose to explicitly list all affected devices here, but alternatively it would be possible to do this programmatically: If the initial pcim_enable_device fails and we're on (any) Dell Latitude, re-try with IRQ_NOTCONNECTED. Marius Hoch (2): i2c: i801: Force no IRQ for Dell Latitude E7450 i2c: i801: Force no IRQ for further Dell Latitudes drivers/i2c/busses/i2c-i801.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) base-commit: cc3c44c9fda264c6d401be04e95449a57c1231c6 -- 2.40.1
