usb: typec: tcpm: reset counter when enter into unattached state after try role
authorXu Yang <xu.yang_2@nxp.com>
Sun, 20 Aug 2023 15:15:18 +0000 (23:15 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 23 Aug 2023 09:12:26 +0000 (11:12 +0200)
commit2d6d80127006ae3da26b1f21a65eccf957f2d1e5
tree2632f1debf54b12ea1186d0ae423b3f812ca013c
parentc97cd0b4b54eb42aed7f6c3c295a2d137f6d2416
usb: typec: tcpm: reset counter when enter into unattached state after try role

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>
drivers/usb/typec/tcpm/tcpm.c