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Date:   Sat, 21 Oct 2023 12:52:29 +0200
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Badhri Jagan Sridharan <badhri@google.com>
Cc:     linux@roeck-us.net, heikki.krogerus@linux.intel.com,
        kyletso@google.com, linux-usb@vger.kernel.org,
        linux-kernel@vger.kernel.org, rdbabiera@google.com,
        amitsd@google.com, stable@vger.kernel.org
Subject: Re: [PATCH v2] usb: typec: tcpm: Fix sink caps op current check
Message-ID: <2023102103-porthole-viscous-340c@gregkh>
References: <20231015035838.2207567-1-badhri@google.com>
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On Sun, Oct 15, 2023 at 03:58:38AM +0000, Badhri Jagan Sridharan wrote:
> TCPM checks for sink caps operational current even when PD is disabled.
> This incorrectly sets tcpm_set_charge() when PD is disabled.
> Check for sink caps only when PD is enabled.
> 
> [   97.572342] Start toggling
> [   97.578949] CC1: 0 -> 0, CC2: 0 -> 0 [state TOGGLING, polarity 0, disconnected]
> [   99.571648] CC1: 0 -> 0, CC2: 0 -> 4 [state TOGGLING, polarity 0, connected]
> [   99.571658] state change TOGGLING -> SNK_ATTACH_WAIT [rev3 NONE_AMS]
> [   99.571673] pending state change SNK_ATTACH_WAIT -> SNK_DEBOUNCED @ 170 ms [rev3 NONE_AMS]
> [   99.741778] state change SNK_ATTACH_WAIT -> SNK_DEBOUNCED [delayed 170 ms]
> [   99.789283] CC1: 0 -> 0, CC2: 4 -> 5 [state SNK_DEBOUNCED, polarity 0, connected]
> [   99.789306] state change SNK_DEBOUNCED -> SNK_DEBOUNCED [rev3 NONE_AMS]
> [   99.903584] VBUS on
> [   99.903591] state change SNK_DEBOUNCED -> SNK_ATTACHED [rev3 NONE_AMS]
> [   99.903600] polarity 1
> [   99.910155] enable vbus discharge ret:0
> [   99.910160] Requesting mux state 1, usb-role 2, orientation 2
> [   99.946791] state change SNK_ATTACHED -> SNK_STARTUP [rev3 NONE_AMS]
> [   99.946798] state change SNK_STARTUP -> SNK_DISCOVERY [rev3 NONE_AMS]
> [   99.946800] Setting voltage/current limit 5000 mV 500 mA
> [   99.946803] vbus=0 charge:=1
> [  100.027139] state change SNK_DISCOVERY -> SNK_READY [rev3 NONE_AMS]
> [  100.027145] Setting voltage/current limit 5000 mV 3000 mA
> [  100.466830] VBUS on
> 
> Cc: stable@vger.kernel.org
> Fixes: 34fde9ec08a3 ("FROMGIT: usb: typec: tcpm: not sink vbus if operational current is 0mA")

This is obviously not a valid git id in Linus's tree, and our tools
reject it :(

thanks,

greg k-h