linux-kernel - Re: [PATCH 2/4] HID: cp2112: remove the last hid_output_raw

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Date:	Wed, 5 Mar 2014 16:09:36 -0500
From:	Benjamin Tissoires <benjamin.tissoires@...il.com>
To:	David Barksdale <dbarksdale@...ogix.com>
Cc:	Benjamin Tissoires <benjamin.tissoires@...hat.com>,
	Jiri Kosina <jkosina@...e.cz>,
	David Herrmann <dh.herrmann@...il.com>,
	"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/4] HID: cp2112: remove the last hid_output_raw_report() call

On Wed, Mar 5, 2014 at 1:11 PM, David Barksdale <dbarksdale@...ogix.com> wrote:
> Sorry for the delay, hid_hw_output_report() is the correct function.

No worries and thanks for the tests.

This saves me some time!

Sending the v2 right away.

Cheers,
Benjamin

>
>
> On March 4, 2014 8:18:38 AM CST, Benjamin Tissoires
> <benjamin.tissoires@...hat.com> wrote:
>>
>> On Mar 04 2014 or thereabouts, Jiri Kosina wrote:
>>>
>>>  On Fri, 28 Feb 2014, Benjamin Tissoires wrote:
>>>
>>>>
>>>>  I don't have access to the device, so I copied/pasted the code
>>>>  from hidraw.
>>>>
>>>>  Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
>>>>  ---
>>>>   drivers/hid/hid-cp2112.c | 16 +++++++++++++++-
>>>>   1 file changed, 15 insertions(+), 1 deletion(-)
>>>>
>>>>  diff --git a/drivers/hid/hid-cp2112.c b/drivers/hid/hid-cp2112.c
>>>>  index 860db694..c4f87bd 100644
>>>>  --- a/drivers/hid/hid-cp2112.c
>>>>  +++ b/drivers/hid/hid-cp2112.c
>>>>  @@ -290,7 +290,21 @@ static int cp2112_hid_output(struct hid_device
>>>> *hdev, u8 *data, size_t count,
>>>>    if (!buf)
>>>>     return -ENOMEM;
>>>>
>>>>  - ret = hdev->hid_output_raw_report(hdev, buf, count, report_type);
>>>>  + /* Fixme: test which function is actually called for output reports
>>>> */
>>>
>>>
>>>  I don't completely understand this Fixme (oh, and please spell it as
>>>  'FIXME:' so that we are consistent with all the other instances), could
>>>  you please elaborate?
>>
>>
>> Well, sorry:
>> As I said, this part is a copy/paste of what is in hidraw. However, this
>> just reflect that we don't know how the device actually behave, which is
>> not very elegant. I have currently no clues of which function will be
>> actually called for output reports: hid_hw_output_report() or
>> hid_hw_raw_request(). Once we got the confirmation of which function is
>> called, we could make the path more straightforward.
>>
>> I bought one of these (it may help debugging some Synaptics devices),
>> and I'll receive it by the end of the week. So by next week, we should
>> get the actual code path and remove this FIXME.
>>
>> I need to send a v2 of hid-sony in any cases, so I guess you should not
>> pull these 4 patches right away. If you prefer having this in linux-next,
>> the sooner, I can also send the v2 right away, and we will fix this
>> cp2112 driver next week.
>>
>> Cheers,
>> Benjamin
>>
>>>
>>>  Thanks,
>>>
>>>  --
>>>  Jiri Kosina
>>>  SUSE Labs
>
>
> --
> Sent from my Android device with K-9 Mail. Please excuse my brevity.
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