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From: <Jacky.Cao@sony.com>
To: <gregkh@linuxfoundation.org>
Cc: <balbi@kernel.org>, <stern@rowland.harvard.edu>,
	<linux-usb@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<Kento.A.Kobayashi@sony.com>, <Jacky.Cao@sony.com>
Subject: RE: [PATCH v3] USB: dummy-hcd: fix power budget for SuperSpeed mode
Date: Fri, 6 Sep 2019 09:04:06 +0000	[thread overview]
Message-ID: <16EA1F625E922C43B00B9D82250220500871DA91@APYOKXMS108.ap.sony.com> (raw)
In-Reply-To: <20190905205516.GA25749@kroah.com>

Hi, 

> 
> Does this "fix" a specific commit in the tree, and if so, what is the commit id of
> that?  Also, should this go to the stable kernel(s)?
> 
> thanks,
> 
> greg k-h

No, this fix is not for specific commit since the POWER_BUDGET(500mA) is used for 
SuperSpeed mode when dummy hcd added SuperSpeed support in commit(1cd8fd2887).

And I think it should be imported to stable kernel(s) considering the "insufficient
available bus power error" mentioned in commit message really happens. We reproduced
this issue with linux-3.10, linux-4.9 which we use and confirmed it can be solved by
this modification.

Regards
Jacky

      reply	other threads:[~2019-09-06  9:04 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-05  4:11 [PATCH v3] USB: dummy-hcd: fix power budget for SuperSpeed mode Jacky.Cao
2019-09-05 14:14 ` Alan Stern
2019-09-05 20:55 ` Greg KH
2019-09-06  9:04   ` Jacky.Cao [this message]

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