From: Greg KH <gregkh@linuxfoundation.org>
To: Yasushi Asano <yazzep@gmail.com>
Cc: stern@rowland.harvard.edu, linux-usb@vger.kernel.org,
erosca@de.adit-jv.com, andrew_gabbasov@mentor.com,
jim_baxter@mentor.com, wnatsume@jp.adit-jv.com,
nnishiguchi@jp.adit-jv.com, yasano@jp.adit-jv.com
Subject: Re: [PATCH v2] [RFC] USB: hub.c: decrease the number of attempts of enumeration scheme
Date: Mon, 10 Aug 2020 09:46:01 +0200 [thread overview]
Message-ID: <20200810074601.GC1529187@kroah.com> (raw)
In-Reply-To: <20200810001935.4489-2-yazzep@gmail.com>
On Mon, Aug 10, 2020 at 09:19:35AM +0900, Yasushi Asano wrote:
> From: Yasushi Asano <yasano@jp.adit-jv.com>
>
> According to 6.7.22 A-UUT “Device No Response” for connection timeout
> of USB OTG and EH automated compliance plan v1.2, the enumeration
> failure has to be detected within 30 seconds. However, the old and new
> enumeration schemes made a total of 16 attempts, and each attempt can
> take 5 seconds to timeout, so it failed with PET test. Modify it to
> reduce the number of attempts to 5 and pass PET test.
>
> in case of old_schene_first=N and use_both_schemes=Y
> attempt 3 * new scheme, then 2 * old scheme
> in case of old_schene_first=Y and use_both_schemes=Y
> attempt 2 * old scheme, then 3 * new scheme
>
> Signed-off-by: Yasushi Asano <yasano@jp.adit-jv.com>
> ---
> drivers/usb/core/hub.c | 16 +++++++---------
> 1 file changed, 7 insertions(+), 9 deletions(-)
Why is there a "[RFC]" on the subject line, do you not think this works
properly? Does it work for your devices and solve the problem for you?
thanks,
greg k-h
next prev parent reply other threads:[~2020-08-10 7:45 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAEt1RjrQsb6=reKUKV9uJTG4JoJXErhJFj=2TdVx=N1_Ad1GVg@mail.gmail.com>
2020-08-08 6:40 ` [PATCH] [RFC] USB: hub.c: decrease the number of attempts of enumeration scheme Yasushi Asano
2020-08-08 15:16 ` Alan Stern
2020-08-10 0:19 ` [PATCH v2] [RFC] USB: hub.c: decrease the number of attempts of enumeration Yasushi Asano
2020-08-10 0:19 ` [PATCH v2] [RFC] USB: hub.c: decrease the number of attempts of enumeration scheme Yasushi Asano
2020-08-10 7:46 ` Greg KH [this message]
2020-08-11 15:20 ` yasushi asano
2020-09-07 15:50 ` [PATCH v3] " Yasushi Asano
2020-09-07 15:50 ` Yasushi Asano
2020-09-08 19:04 ` Alan Stern
2020-09-10 4:49 ` yasushi asano
2020-09-11 8:33 ` yasushi asano
2020-09-11 15:12 ` Alan Stern
2020-09-15 9:45 ` Eugeniu Rosca
2020-09-15 11:01 ` Greg KH
2020-09-15 14:52 ` Alan Stern
2020-09-16 10:16 ` yasushi asano
2020-09-18 15:00 ` yasushi asano
2020-09-20 19:21 ` Alan Stern
2020-09-21 14:03 ` [PATCH] " Yasushi Asano
2020-09-21 14:48 ` Alan Stern
[not found] ` <CAEt1Rjq-DOwN0+_7F0m-kqUHTzm5YPUaXqUOpTszCsqrfLRt5w@mail.gmail.com>
2020-09-21 15:06 ` Alan Stern
2020-09-25 1:05 ` yasushi asano
2020-09-25 17:21 ` yasushi asano
2020-09-25 18:41 ` Alan Stern
2020-09-27 15:43 ` yasushi asano
2020-09-28 15:20 ` [Patch 1/2]: USB: hub: Clean up use of port initialization schemes and retries Alan Stern
2020-09-28 15:22 ` [Patch 2/2]: USB: hub: Add Kconfig option to reduce number of port initialization retries Alan Stern
2020-09-15 14:48 ` [PATCH v3] USB: hub.c: decrease the number of attempts of enumeration scheme Alan Stern
2020-08-12 17:09 ` [PATCH v2] " Yasushi Asano
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