i801_smbus / smo8800 irq clash? pcim_enable_device() fails

* i801_smbus / smo8800 irq clash? pcim_enable_device() fails
@ 2017-10-21 10:49 Domen Puncer Kugler
  0 siblings, 0 replies; only message in thread
From: Domen Puncer Kugler @ 2017-10-21 10:49 UTC (permalink / raw)
  To: linux-acpi, linux-i2c; +Cc: Pali Rohár

Hi,

I'm trying to track down the root cause of
https://bugzilla.kernel.org/show_bug.cgi?id=194141 and I'm a bit
stuck.

Currently my understanding is:
1. early on boot acpi_register_gsi_ioapic(NULL, gsi=18, ...) is called
for smo8800 driver
2. later i801_probe() calls pcim_enable_device(), which eventually
calls acpi_register_gsi_ioapic(i801_smbus, gsi=18, ...), which fails;
failure then propagates back to probe.
(if I insert code to fail on step 1, step 2 succeeds, and driver works)

Now, to me it's understandable that registering IRQ fails, since
smo8800 doesn't share it, but should that mean pcim_register_device
fails too?

--
   Domen

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