Re: I2C OF IRQ parsing issue due to probe ordering

Wolfram Sang
2014-10-27T12:58:24Z

[-- Attachment #1: Type: text/plain, Size: 879 bytes --]

> The i2c@e6520000 node is probed before the gpio@e6051000 node. The
> of_i2c_register_devices() function tries to register all children, including
> hdmi@39. It tries to parse and map the I2C client IRQ by calling
> irq_of_parse_and_map(), which returns 0 as the interrupt controller isn't
> probed yet. The adv7511 driver later probes the hdmi@39 device and gets
> client->irq set to 0.

I've got this strange feeling of deja vu... Ah, here: Thierry Reding
tackled this problem a year ago. His series:

https://lkml.org/lkml/2013/9/16/111 (of/irq: Defer interrupt reference
resolution)

He did a V2 (which never made it to the i2c list). Seems like the first
two patches made it and the rest got stalled without discussion?

https://lkml.org/lkml/2013/9/18/216

Adding Thierry to the queue. Maybe he can bring some light to what
happened to his series.

Regards,

Wolfram

[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 819 bytes --]