linux-kernel - Re: [PATCH v5] usb: typec: intel_pmc_mux: Expose IOM port status to debugfs

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Date:   Tue, 30 May 2023 22:28:53 +0530
From:   Rajat Khandelwal <rajat.khandelwal@...ux.intel.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     heikki.krogerus@...ux.intel.com, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5] usb: typec: intel_pmc_mux: Expose IOM port status to
 debugfs

Hi,

On 5/30/2023 3:14 PM, Greg KH wrote:
> On Tue, May 30, 2023 at 03:06:15PM +0530, Rajat Khandelwal wrote:
>> Hi,
>>
>> On 5/30/2023 2:57 PM, Greg KH wrote:
>>> On Tue, May 30, 2023 at 02:45:03PM +0530, Rajat Khandelwal wrote:
>>>> Hi,
>>>>
>>>> On 5/29/2023 7:48 PM, Greg KH wrote:
>>>>> On Wed, May 24, 2023 at 04:17:54PM +0530, Rajat Khandelwal wrote:
>>>>>> IOM status has a crucial role during debugging to check the
>>>>>> current state of the type-C port.
>>>>>> There are ways to fetch the status, but all those require the
>>>>>> IOM port status offset, which could change with platform.
>>>>>>
>>>>>> Make a debugfs directory for intel_pmc_mux and expose the status
>>>>>> under it per port basis.
>>>>>>
>>>>>> Signed-off-by: Rajat Khandelwal <rajat.khandelwal@...ux.intel.com>
>>>>>> Reviewed-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
>>>>> Does not apply to my tree :(
>>>> I have pushed the patch on top of the Linus's tree.
>>>> Had a quick check with the USB Linux tree and seems like its a lot
>>>> behind?
>>> What branch did you use?
>>>
>>> Please use the usb-next branch of
>>> git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git, which as
>>> of right now, is at 6.4-rc4 + a bunch of USB-specific patches.
>> I see. There is one commit additional in the usb-next tree:
>> ef0a3642b320 usb: typec: intel_pmc_mux: Convert to platform remove callback returning void
> One?  I count a lot more:
>
> $ git log --oneline main..usb-next | wc -l
> 143

I was referring to Linus's master branch. :)

>
>> Anyways, do you want me to re-work the patch for the usb-next branch?
> Given that I can not take the patch as-is, it's up to you to rebase it
> if you wish to have it accepted.

Ok. I will make a v6 on top of usb-next.

Thanks
Rajat

>
> Isn't this all covered in the Intel kernel developer training class?
>
> thanks,
>
> greg k-h