[PATCH] of_i2c: Honour "status=disabled" property of device

Rob Herring robherring2 at gmail.com
Thu Nov 29 04:05:43 EST 2012


On 11/28/2012 10:51 AM, Alexander Sverdlin wrote:
> Hi!
> 
> On 11/28/2012 05:16 PM, Stephen Warren wrote:
>> On 11/28/2012 07:21 AM, Alexander Sverdlin wrote:
>>> of_i2c: Honour "status=disabled" property of device
>>>
>>> Currently of_i2c_register_devices() function registers all i2c devices,
>>> independently from their status property in device tree. According to
>>> "ePAPR 1.1" spec, device should only be registered if there is no
>>> "status" property, or it has "ok" (or "okay") value (see
>>> of_device_is_available()). In case of "platform devices",
>>> of_platform_device_create_pdata() checks for "status" and ensures
>>> that disabled devices are not populated. But such check for i2c buses
>>> was missing until now. Fix it.
>>
>> Do SPI and other buses (e.g. MDIO/MDIO mux?) need a similar change?
> 
> You are right, of_register_spi_devices() and of_mdiobus_register() both have exactly the same issue.
> Should it be a follow-up patch, or better to combine them to one patch?

Separate please in case there is some reason to revert. Also, I already
have a patch for i2c that does the same thing in my tree. However, your
patch is better, so I'll probably replace it with yours.

Rob



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