linux-kernel - Re: [PATCH v2] usb: dwc2: resume root hub when device detect with suspend state

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Message-ID: <CAD=FV=WNtxxTGtT4h4wg_oX5_c9bGRi+WWViqVXYmSWghn_giw@mail.gmail.com>
Date:	Mon, 17 Nov 2014 19:01:07 -0800
From:	Doug Anderson <dianders@...omium.org>
To:	Kever Yang <kever.yang@...k-chips.com>
Cc:	Paul Zimmerman <paulz@...opsys.com>, Felipe Balbi <balbi@...com>,
	Dinh Nguyen <dinguyen@...nsource.altera.com>,
	Romain Perier <romain.perier@...il.com>,
	Heiko Stuebner <heiko@...ech.de>,
	Sonny Rao <sonnyrao@...omium.org>,
	Addy Ke <addy.ke@...k-chips.com>,
	Eddie Cai <cf@...k-chips.com>, wulf <wulf@...k-chips.com>,
	Tao Huang <huangtao@...k-chips.com>,
	"open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
	Roy Li <roy.li@...k-chips.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	jwerner@...omium.org
Subject: Re: [PATCH v2] usb: dwc2: resume root hub when device detect with
 suspend state

Kever,

On Mon, Nov 17, 2014 at 5:21 PM, Kever Yang <kever.yang@...k-chips.com> wrote:
> After we implement the bus_suspend/resume, auto suspend id enabled.
> The root hub will be auto suspend if there is no device connected,
> we need to resume the root hub when a device connect detect.
>
> This patch tested on rk3288.
>
> Signed-off-by: Roy Li <roy.li@...k-chips.com>
> Signed-off-by: Kever Yang <kever.yang@...k-chips.com>
> ---
>
> Changes in v2:
> - add definition for hcd structure
> - remove check for bus->root_hub
>
>  drivers/usb/dwc2/hcd_intr.c | 5 +++++
>  1 file changed, 5 insertions(+)

I can confirm that in my tests this fixes the problems introduced by
your v3 patch at <https://patchwork.kernel.org/patch/5266281/>.  On
rk3288-pinky:

Tested-by: Doug Anderson <dianders@...omium.org>
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