From: Felipe Balbi <balbi@kernel.org>
To: Alan Stern <stern@rowland.harvard.edu>,
Andrey Konovalov <andreyknvl@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
USB list <linux-usb@vger.kernel.org>,
Dmitry Vyukov <dvyukov@google.com>
Subject: Re: Testing endpoint halt support for raw-gadget
Date: Tue, 05 May 2020 09:30:38 +0300 [thread overview]
Message-ID: <87d07ic2r5.fsf@kernel.org> (raw)
In-Reply-To: <Pine.LNX.4.44L0.2005041018520.11213-100000@netrider.rowland.org>
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Hi,
Alan Stern <stern@rowland.harvard.edu> writes:
> On Mon, 4 May 2020, Andrey Konovalov wrote:
>
>> One more question (sorry for so many :).
>>
>> Looking at other fields of usb_request struct I see frame_number.
>> AFAIU it's filled in by the UDC driver for ISO transfers. Does it make
>> sense to expose it to userspace? I don't see any composite/legacy
>> gadgets use that field at all.
>
> Do any of those gadget drivers use isochronous endpoints?
>
> In fact, it also looks like none of the drivers in gadget/udc/ touch
> the frame_number field. Maybe we should just get rid of it, since it
> isn't being used.
>
> Felipe, any preference?
It was added for functions to use to tell the UDC which frame they want
to start the request, but it was never used. I don't mind removing it.
--
balbi
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next prev parent reply other threads:[~2020-05-05 6:30 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-09 16:48 Testing endpoint halt support for raw-gadget Andrey Konovalov
2020-04-10 0:29 ` Alan Stern
2020-04-10 15:13 ` Andrey Konovalov
2020-04-10 15:53 ` Alan Stern
2020-04-27 1:26 ` Peter Chen
2020-04-27 14:29 ` Alan Stern
2020-04-29 2:20 ` Andrey Konovalov
2020-04-29 14:06 ` Alan Stern
2020-05-04 14:16 ` Andrey Konovalov
2020-05-04 14:24 ` Alan Stern
2020-05-04 15:11 ` Andrey Konovalov
2020-05-04 15:15 ` Alan Stern
2020-05-05 6:34 ` Felipe Balbi
2020-05-05 12:13 ` Andrey Konovalov
2020-05-05 16:42 ` Thinh Nguyen
2020-05-05 6:30 ` Felipe Balbi [this message]
2020-04-24 19:36 ` Andrey Konovalov
2020-04-24 19:56 ` Andrey Konovalov
2020-04-25 1:53 ` Alan Stern
2020-04-25 14:49 ` Andrey Konovalov
2020-04-25 15:02 ` Alan Stern
2020-04-27 19:51 ` Andrey Konovalov
2020-04-27 20:47 ` Andrey Konovalov
2020-04-28 0:50 ` Andrey Konovalov
2020-04-28 1:32 ` Andrey Konovalov
2020-04-28 13:27 ` Alan Stern
2020-05-13 17:07 ` Andrey Konovalov
2020-05-13 18:14 ` Alan Stern
2020-05-13 18:31 ` Andrey Konovalov
2020-05-13 19:09 ` Alan Stern
2020-05-13 19:38 ` Andrey Konovalov
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