From: Greg KH <gregkh@linuxfoundation.org>
To: Jacky.Cao@sony.com
Cc: balbi@kernel.org, stern@rowland.harvard.edu,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
Kento.A.Kobayashi@sony.com
Subject: Re: [PATCH v3] USB: dummy-hcd: fix power budget for SuperSpeed mode
Date: Thu, 5 Sep 2019 22:55:16 +0200 [thread overview]
Message-ID: <20190905205516.GA25749@kroah.com> (raw)
In-Reply-To: <16EA1F625E922C43B00B9D82250220500871CDE5@APYOKXMS108.ap.sony.com>
On Thu, Sep 05, 2019 at 04:11:57AM +0000, Jacky.Cao@sony.com wrote:
> The power budget for SuperSpeed mode should be 900 mA
> according to USB specification, so set the power budget
> to 900mA for dummy_start_ss which is only used for
> SuperSpeed mode.
>
> If the max power consumption of SuperSpeed device is
> larger than 500 mA, insufficient available bus power
> error happens in usb_choose_configuration function
> when the device connects to dummy hcd.
>
> Signed-off-by: Jacky Cao <Jacky.Cao@sony.com>
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
next prev parent reply other threads:[~2019-09-05 20:55 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 [this message]
2019-09-06 9:04 ` Jacky.Cao
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