From: Badhri Jagan Sridharan badhri@google.com
commit 374157ff88ae1a7f7927331cbc72c1ec11994e8a upstream.
"usb: typec: tcpm: Address incorrect values of tcpm psy for pps supply" introduced a regression for req_out_volt and req_op_curr calculation.
req_out_volt should consider the newly calculated max voltage instead of previously accepted max voltage by the port partner. Likewise, req_op_curr should consider the newly calculated max current instead of previously accepted max current by the port partner.
Fixes: e3a072022487 ("usb: typec: tcpm: Address incorrect values of tcpm psy for pps supply") Reviewed-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Badhri Jagan Sridharan badhri@google.com Link: https://lore.kernel.org/r/20210415050121.1928298-1-badhri@google.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/typec/tcpm/tcpm.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -2339,10 +2339,10 @@ static unsigned int tcpm_pd_select_pps_a port->pps_data.req_max_volt = min(pdo_pps_apdo_max_voltage(src), pdo_pps_apdo_max_voltage(snk)); port->pps_data.req_max_curr = min_pps_apdo_current(src, snk); - port->pps_data.req_out_volt = min(port->pps_data.max_volt, - max(port->pps_data.min_volt, + port->pps_data.req_out_volt = min(port->pps_data.req_max_volt, + max(port->pps_data.req_min_volt, port->pps_data.req_out_volt)); - port->pps_data.req_op_curr = min(port->pps_data.max_curr, + port->pps_data.req_op_curr = min(port->pps_data.req_max_curr, port->pps_data.req_op_curr); }