linux-kernel - Re: [PATCH v3] USB: dummy-hcd: fix power budget for SuperSpeed mode

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Message-ID: <20190905205516.GA25749@kroah.com>
Date:   Thu, 5 Sep 2019 22:55:16 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Jacky.Cao@...y.com
Cc:     balbi@...nel.org, stern@...land.harvard.edu,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        Kento.A.Kobayashi@...y.com
Subject: Re: [PATCH v3] USB: dummy-hcd: fix power budget for SuperSpeed mode

On Thu, Sep 05, 2019 at 04:11:57AM +0000, Jacky.Cao@...y.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@...y.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