Messages in this thread | | | Subject | MFD: core assumes that all children are platform devices | From | Jean-Francois Dagenais <> | Date | Mon, 28 Nov 2011 11:31:21 -0500 |
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Hi,
I have a pci driver that registers with UIO for it's operations. As a consequence, the pci device instance has a child device of class uio.
My driver also declares a ds1wm instance that has it's register interface at an offset in BAR0 of the pci device, as an MFD cell.
When I call mfd_remove_devices, MFD proceeds to enumerate ALL the parent device's chilren and assumes that they are MFD cells, and thus platform_device, which is not true in my case. (...uio is a child of the parent pci device)
I had (luckily or unluckily) not seen signs of this broken assumption on certain setups I have used, but in my current setup, this page-faults every time now.
This is a major thing and I have not found the assumption documented anywhere.
I could first declare a new child device on my pci device and then declare it as the parent to the mfd cells...
Or, is there a way for the mfd-core, as it's doing the "for each child device", to recognize non-MFD-cell children and skip them?
/jfd
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