linux-kernel - Re: [PATCH v1] usb: typec: altmodes/displayport: Signal hpd when configuring pin assignment

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Message-ID: <2023080408-splotchy-numerous-463d@gregkh>
Date:   Fri, 4 Aug 2023 14:56:02 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     RD Babiera <rdbabiera@...gle.com>
Cc:     heikki.krogerus@...ux.intel.com, badhri@...gle.com,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org
Subject: Re: [PATCH v1] usb: typec: altmodes/displayport: Signal hpd when
 configuring pin assignment

On Wed, Jul 26, 2023 at 02:09:02AM +0000, RD Babiera wrote:
> When connecting to some DisplayPort partners, the initial status update
> after entering DisplayPort Alt Mode notifies that the DFP_D/UFP_D is not in
> the connected state. This leads to sending a configure message that keeps
> the device in USB mode. The port partner then sets DFP_D/UFP_D to the
> connected state and HPD to high in the same Attention message. Currently,
> the HPD signal is dropped in order to handle configuration.
> 
> This patch saves changes to the HPD signal when the device chooses to
> configure during dp_altmode_status_update, and invokes sysfs_notify if
> necessary for HPD after configuring.
> 
> Fixes: 0e3bb7d6894d ("usb: typec: Add driver for DisplayPort alternate mode")
> Cc: stable@...r.kernel.org
> Signed-off-by: RD Babiera <rdbabiera@...gle.com>
> ---
>  drivers/usb/typec/altmodes/displayport.c | 18 +++++++++++++++++-
>  1 file changed, 17 insertions(+), 1 deletion(-)

Meta-comment, please fix your email client up.  The "To:" line was
incorrect, and when applying this patch I get the following:

---
  ✗ [PATCH v1] usb: typec: altmodes/displayport: Signal hpd when configuring pin assignment
    + Acked-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com> (✓ DKIM/intel.com)
  ---
  ✗ BADSIG: DKIM/google.com

So, is this a fake google.com address?

I'll take this this time, but please fix your system up going forward.

thanks,

greg k-h