linux-kernel - Re: [PATCH] usb: host: xhci-mtk: omit shared hcd if either root hub has no ports

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Date:   Mon, 21 Nov 2022 10:05:51 +0100
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Mathias Nyman <mathias.nyman@...el.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        linux-usb@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Eddie Hung <eddie.hung@...iatek.com>
Subject: Re: [PATCH] usb: host: xhci-mtk: omit shared hcd if either root hub
 has no ports

Il 18/11/22 12:01, Chunfeng Yun ha scritto:
> There is error log when add a usb3 root hub without ports:
> "hub 4-0:1.0: config failed, hub doesn't have any ports! (err -19)"
> 
> so omit the shared hcd if either of the root hubs has no ports, but
> usually there is no usb3 port.
> 
> Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>