linux-kernel - RE: [PATCH 2/2] usb: typec: intel_pmc_mux: Check the port status before connect

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Date:   Fri, 17 Jul 2020 06:04:51 +0000
From:   "Mani, Rajmohan" <rajmohan.mani@...el.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Lee Jones <lee.jones@...aro.org>,
        Ayman Bagabas <ayman.bagabas@...il.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        "Joseph, Jithu" <jithu.joseph@...el.com>,
        Blaž Hrastnik <blaz@...n.io>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "platform-driver-x86@...r.kernel.org" 
        <platform-driver-x86@...r.kernel.org>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "pmalani@...omium.org" <pmalani@...omium.org>,
        "bleung@...omium.org" <bleung@...omium.org>
Subject: RE: [PATCH 2/2] usb: typec: intel_pmc_mux: Check the port status
 before connect

Hi Greg,

> -----Original Message-----
> From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Sent: Thursday, July 16, 2020 12:05 AM
> To: Mani, Rajmohan <rajmohan.mani@...el.com>
> Cc: Darren Hart <dvhart@...radead.org>; Andy Shevchenko
> <andy@...radead.org>; Mika Westerberg
> <mika.westerberg@...ux.intel.com>; Dmitry Torokhov
> <dmitry.torokhov@...il.com>; Lee Jones <lee.jones@...aro.org>; Ayman
> Bagabas <ayman.bagabas@...il.com>; Masahiro Yamada
> <masahiroy@...nel.org>; Joseph, Jithu <jithu.joseph@...el.com>; Blaž
> Hrastnik <blaz@...n.io>; Srinivas Pandruvada
> <srinivas.pandruvada@...ux.intel.com>; linux-kernel@...r.kernel.org;
> platform-driver-x86@...r.kernel.org; Heikki Krogerus
> <heikki.krogerus@...ux.intel.com>; linux-usb@...r.kernel.org;
> pmalani@...omium.org; bleung@...omium.org
> Subject: Re: [PATCH 2/2] usb: typec: intel_pmc_mux: Check the port status
> before connect
> 
> On Wed, Jul 15, 2020 at 05:33:10PM -0700, Rajmohan Mani wrote:
> > From: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
> >
> > The PMC microcontroller that we use for configuration, does not supply
> > any status information back. For port status we need to talk to
> > another controller on the board called IOM (I/O manager).
> >
> > By checking the port status before configuring the muxes, we can make
> > sure that we do not reconfigure the port after bootup when the system
> > firmware (for example BIOS) has already configured it.
> >
> > Using the status information also to check if DisplayPort HPD is still
> > asserted when the cable plug is disconnected, and clearing it if it
> > is.
> >
> > Signed-off-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
> 
> You can't just forward on patches from others without also adding your
> signed-off-by to them, right?
> 

Sorry I missed this.

> Please fix up this series and try again.
> 

Ack. Will fix this with v2.

> thanks,
> 
> greg k-h