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

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Message-ID: <20200716070508.GB962748@kroah.com>
Date:   Thu, 16 Jul 2020 09:05:08 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Rajmohan Mani <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>,
        Jithu Joseph <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?

Please fix up this series and try again.

thanks,

greg k-h