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| author | RD Babiera <rdbabiera@google.com> | 2024-04-23 20:27:16 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-04-30 19:43:54 +0200 |
| commit | bf20c69cf3cf9c6445c4925dd9a8a6ca1b78bfdf (patch) | |
| tree | da896785efbcffe3140a32b87568c60d94bce42c /drivers/usb | |
| parent | edc5a009ee3bdc2161e2c3e782a37805617790a3 (diff) | |
| download | linux-bf20c69cf3cf9c6445c4925dd9a8a6ca1b78bfdf.tar.gz linux-bf20c69cf3cf9c6445c4925dd9a8a6ca1b78bfdf.tar.bz2 linux-bf20c69cf3cf9c6445c4925dd9a8a6ca1b78bfdf.zip | |
usb: typec: tcpm: clear pd_event queue in PORT_RESET
When a Fast Role Swap control message attempt results in a transition
to ERROR_RECOVERY, the TCPC can still queue a TCPM_SOURCING_VBUS event.
If the event is queued but processed after the tcpm_reset_port() call
in the PORT_RESET state, then the following occurs:
1. tcpm_reset_port() calls tcpm_init_vbus() to reset the vbus sourcing and
sinking state
2. tcpm_pd_event_handler() turns VBUS on before the port is in the default
state.
3. The port resolves as a sink. In the SNK_DISCOVERY state,
tcpm_set_charge() cannot set vbus to charge.
Clear pd events within PORT_RESET to get rid of non-applicable events.
Fixes: b17dd57118fe ("staging: typec: tcpm: Improve role swap with non PD capable partners")
Cc: stable@vger.kernel.org
Signed-off-by: RD Babiera <rdbabiera@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240423202715.3375827-2-rdbabiera@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/typec/tcpm/tcpm.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 99a039374f9c..a0e0ffd5a64b 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -5605,6 +5605,7 @@ static void run_state_machine(struct tcpm_port *port) break; case PORT_RESET: tcpm_reset_port(port); + port->pd_events = 0; if (port->self_powered) tcpm_set_cc(port, TYPEC_CC_OPEN); else |