Hi Marius, On Sun, 14 May 2023 12:36:32 +0200, Marius Hoch wrote: > 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 The i2c-i801 driver supports shared IRQ. If this fails, this means that the other driver is not passing IRQF_SHARED when registering the interrupt. Which driver is this? I'd rather check whether sharing the IRQ is possible, rather that falling back to polling, which has a performance cost. > 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. What makes you think so? -- Jean Delvare SUSE L3 Support
