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Subject: Re: [PATCH 5/7] usb: bdc: driver runs out of buffer descriptors on
 large ADB transfers
To:     Al Cooper <alcooperx@gmail.com>, linux-kernel@vger.kernel.org
Cc:     devicetree@vger.kernel.org, Felipe Balbi <balbi@kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        linux-usb@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
        Sasi Kumar <sasi.kumar@broadcom.com>
References: <20200717152307.36705-1-alcooperx@gmail.com>
 <20200717152307.36705-6-alcooperx@gmail.com>
From:   Florian Fainelli <f.fainelli@gmail.com>
Message-ID: <5bc7603c-0e1f-762f-0d67-1c817c03c5ca@gmail.com>
Date:   Fri, 17 Jul 2020 09:58:05 -0700
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On 7/17/2020 8:23 AM, Al Cooper wrote:
> Version v1.0.40 of the Android host ADB software increased maximum
> transfer sizes from 256K to 1M. Since the STB ADB gadget driver
> requests only 16K at a time, the BDC driver ran out of buffer
> descriptors (BDs) if the queuing happens faster than the incoming
> 16K transfers. This issue is fixed by doubling the number of BDs
> that can be queued so that the entire 1M request can be queued
> without running out of buffers.
> 
> Signed-off-by: Al Cooper <alcooperx@gmail.com>
> Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>

You can certainly remove my SoB here, since you are carrying your own
patch, thanks!
-- 
Florian