> The Phytium i2c driver would register the i2c adapter with idr id 0 by > calling function i2c_add_numbered_adapter(adap). Then, function > idr_alloc(&i2c_adapter_idr, adap, adap->nr, adap->nr + 1, GFP_KERNEL)； > allocate the idr failed because idr id adap->nr(It equal to _UID) has been > allocated by MWV207 GPU, and print the following error: > > couldn't get idr > i2c-phytium-platform PHYT0038:00: fail to add adapter: -16 i2c-phytium-platform is not an upstream driver, right? Why does it not simply use i2c_add_adapter() instead of i2c_add_numbered_adapter()?
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