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usb: typec: tcpm: reset counter when enter into unattached state after try role

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The try_src_count and try_snk_count may still be 1 after enter into
unattached state. This may be caused by below case:
 - SNK_TRY->SNK_TRY_WAIT->SRC_TRYWAIT->SNK_UNATTACHED
 - SRC_TRY->SRC_TRY_WAIT->SNK_TRYWAIT->SNK_UNATTACHED

The port->attached is not true at the end and tcpm_reset_port() will not
be called. This will reset counter into for these cases, otherwise the tcpm
won't try role when new cable attached.

Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20230820151518.1403006-1-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Xu Yang 2023-08-20 23:15:18 +08:00 committed by Greg Kroah-Hartman
parent c97cd0b4b5
commit 2d6d801270
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/typec/tcpm/tcpm.c
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@ -3720,6 +3720,9 @@ static void tcpm_detach(struct tcpm_port *port)
if (tcpm_port_is_disconnected(port))
port->hard_reset_count = 0;
port->try_src_count = 0;
port->try_snk_count = 0;
if (!port->attached)
return;