| Message ID | 20240520154858.1072347-1-kyletso@google.com |
|---|---|
| State | New |
| Headers | show |
| Series | usb: typec: tcpm: Ignore received Hard Reset in TOGGLING state | expand |
On Mon, May 20, 2024 at 11:48:58PM +0800, Kyle Tso wrote: > Similar to what fixed in Commit a6fe37f428c1 ("usb: typec: tcpm: Skip > hard reset when in error recovery"), the handling of the received Hard > Reset has to be skipped during TOGGLING state. > > [ 4086.021288] VBUS off > [ 4086.021295] pending state change SNK_READY -> SNK_UNATTACHED @ 650 ms [rev2 NONE_AMS] > [ 4086.022113] VBUS VSAFE0V > [ 4086.022117] state change SNK_READY -> SNK_UNATTACHED [rev2 NONE_AMS] > [ 4086.022447] VBUS off > [ 4086.022450] state change SNK_UNATTACHED -> SNK_UNATTACHED [rev2 NONE_AMS] > [ 4086.023060] VBUS VSAFE0V > [ 4086.023064] state change SNK_UNATTACHED -> SNK_UNATTACHED [rev2 NONE_AMS] > [ 4086.023070] disable BIST MODE TESTDATA > [ 4086.023766] disable vbus discharge ret:0 > [ 4086.023911] Setting usb_comm capable false > [ 4086.028874] Setting voltage/current limit 0 mV 0 mA > [ 4086.028888] polarity 0 > [ 4086.030305] Requesting mux state 0, usb-role 0, orientation 0 > [ 4086.033539] Start toggling > [ 4086.038496] state change SNK_UNATTACHED -> TOGGLING [rev2 NONE_AMS] > > // This Hard Reset is unexpected > [ 4086.038499] Received hard reset > [ 4086.038501] state change TOGGLING -> HARD_RESET_START [rev2 HARD_RESET] > > Fixes: f0690a25a140 ("staging: typec: USB Type-C Port Manager (tcpm)") > Cc: stable@vger.kernel.org > Signed-off-by: Kyle Tso <kyletso@google.com> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> > --- > drivers/usb/typec/tcpm/tcpm.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c > index 8a1af08f71b6..9c1cb8c11bd6 100644 > --- a/drivers/usb/typec/tcpm/tcpm.c > +++ b/drivers/usb/typec/tcpm/tcpm.c > @@ -6172,6 +6172,7 @@ static void _tcpm_pd_hard_reset(struct tcpm_port *port) > port->tcpc->set_bist_data(port->tcpc, false); > > switch (port->state) { > + case TOGGLING: > case ERROR_RECOVERY: > case PORT_RESET: > case PORT_RESET_WAIT_OFF: > -- > 2.45.0.rc1.225.g2a3ae87e7f-goog
diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 8a1af08f71b6..9c1cb8c11bd6 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -6172,6 +6172,7 @@ static void _tcpm_pd_hard_reset(struct tcpm_port *port) port->tcpc->set_bist_data(port->tcpc, false); switch (port->state) { + case TOGGLING: case ERROR_RECOVERY: case PORT_RESET: case PORT_RESET_WAIT_OFF:
Similar to what fixed in Commit a6fe37f428c1 ("usb: typec: tcpm: Skip hard reset when in error recovery"), the handling of the received Hard Reset has to be skipped during TOGGLING state. [ 4086.021288] VBUS off [ 4086.021295] pending state change SNK_READY -> SNK_UNATTACHED @ 650 ms [rev2 NONE_AMS] [ 4086.022113] VBUS VSAFE0V [ 4086.022117] state change SNK_READY -> SNK_UNATTACHED [rev2 NONE_AMS] [ 4086.022447] VBUS off [ 4086.022450] state change SNK_UNATTACHED -> SNK_UNATTACHED [rev2 NONE_AMS] [ 4086.023060] VBUS VSAFE0V [ 4086.023064] state change SNK_UNATTACHED -> SNK_UNATTACHED [rev2 NONE_AMS] [ 4086.023070] disable BIST MODE TESTDATA [ 4086.023766] disable vbus discharge ret:0 [ 4086.023911] Setting usb_comm capable false [ 4086.028874] Setting voltage/current limit 0 mV 0 mA [ 4086.028888] polarity 0 [ 4086.030305] Requesting mux state 0, usb-role 0, orientation 0 [ 4086.033539] Start toggling [ 4086.038496] state change SNK_UNATTACHED -> TOGGLING [rev2 NONE_AMS] // This Hard Reset is unexpected [ 4086.038499] Received hard reset [ 4086.038501] state change TOGGLING -> HARD_RESET_START [rev2 HARD_RESET] Fixes: f0690a25a140 ("staging: typec: USB Type-C Port Manager (tcpm)") Cc: stable@vger.kernel.org Signed-off-by: Kyle Tso <kyletso@google.com> --- drivers/usb/typec/tcpm/tcpm.c | 1 + 1 file changed, 1 insertion(+)