* multiple i2c-ocores adapters
@ 2015-10-02 5:47 York Sun
2015-10-02 6:03 ` Peter Korsgaard
0 siblings, 1 reply; 4+ messages in thread
From: York Sun @ 2015-10-02 5:47 UTC (permalink / raw)
To: Peter Korsgaard; +Cc: Wolfram Sang, linux-i2c@vger.kernel.org
Peter,
I have a platform (FPGA) with multiple ocores i2c adapter. When I register them using MFD framework, I got a message regarding duplicating name for sysfs. I wonder if this driver (i2c-ocores.c) only supports one adapter. I can try to fix it by adding a name string into ocores_i2c_platform_data and allocate struct i2c_adapter on demand. Am I on the right direction?
York
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: multiple i2c-ocores adapters
2015-10-02 5:47 multiple i2c-ocores adapters York Sun
@ 2015-10-02 6:03 ` Peter Korsgaard
2015-10-02 19:11 ` York Sun
0 siblings, 1 reply; 4+ messages in thread
From: Peter Korsgaard @ 2015-10-02 6:03 UTC (permalink / raw)
To: York Sun; +Cc: Peter Korsgaard, Wolfram Sang, linux-i2c@vger.kernel.org
>>>>> "York" == York Sun <yorksun@freescale.com> writes:
> Peter,
> I have a platform (FPGA) with multiple ocores i2c adapter. When I
> register them using MFD framework, I got a message regarding
> duplicating name for sysfs. I wonder if this driver (i2c-ocores.c)
> only supports one adapter. I can try to fix it by adding a name string
> into ocores_i2c_platform_data and allocate struct i2c_adapter on
> demand. Am I on the right direction?
I guess your problem is that the driver core is complaining about
duplicate names for your platform devices (generated from the
mfd_cell). Make sure you set the .id member to something unique.
--
Bye, Peter Korsgaard
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: multiple i2c-ocores adapters
2015-10-02 6:03 ` Peter Korsgaard
@ 2015-10-02 19:11 ` York Sun
2015-10-02 20:51 ` Peter Korsgaard
0 siblings, 1 reply; 4+ messages in thread
From: York Sun @ 2015-10-02 19:11 UTC (permalink / raw)
To: Peter Korsgaard; +Cc: Peter Korsgaard, Wolfram Sang, linux-i2c@vger.kernel.org
Peter,
On 10/01/2015 11:03 PM, Peter Korsgaard wrote:
>>>>>> "York" == York Sun <yorksun@freescale.com> writes:
>
> > Peter,
>
> > I have a platform (FPGA) with multiple ocores i2c adapter. When I
> > register them using MFD framework, I got a message regarding
> > duplicating name for sysfs. I wonder if this driver (i2c-ocores.c)
> > only supports one adapter. I can try to fix it by adding a name string
> > into ocores_i2c_platform_data and allocate struct i2c_adapter on
> > demand. Am I on the right direction?
>
> I guess your problem is that the driver core is complaining about
> duplicate names for your platform devices (generated from the
> mfd_cell). Make sure you set the .id member to something unique.
>
What I got was
sysfs: cannot create duplicate filename '/bus/platform/devices/ocores-i2c'
I think it is caused by the i2c-ocores driver. Will dig deeper.
York
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: multiple i2c-ocores adapters
2015-10-02 19:11 ` York Sun
@ 2015-10-02 20:51 ` Peter Korsgaard
0 siblings, 0 replies; 4+ messages in thread
From: Peter Korsgaard @ 2015-10-02 20:51 UTC (permalink / raw)
To: York Sun; +Cc: Peter Korsgaard, Wolfram Sang, linux-i2c@vger.kernel.org
>>>>> "York" == York Sun <yorksun@freescale.com> writes:
Hi,
>> I guess your problem is that the driver core is complaining about
>> duplicate names for your platform devices (generated from the
>> mfd_cell). Make sure you set the .id member to something unique.
> What I got was
> sysfs: cannot create duplicate filename '/bus/platform/devices/ocores-i2c'
> I think it is caused by the i2c-ocores driver. Will dig deeper.
Like I said, this sounds like you are trying to register multiple
platform devices with the same name (ocores-i2c) and id == -1.
Please make sure you use unique ids when you have more than 1 device
instance on your system.
--
Bye, Peter Korsgaard
^ permalink raw reply [flat|nested] 4+ messages in thread
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2015-10-02 5:47 multiple i2c-ocores adapters York Sun
2015-10-02 6:03 ` Peter Korsgaard
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2015-10-02 20:51 ` Peter Korsgaard
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