We need regmap_update_bits to avoid touch any other bits when enable or disable vconn. Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx> Reviewed-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> Signed-off-by: Li Jun <jun.li@xxxxxxx> --- drivers/staging/typec/tcpci.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/staging/typec/tcpci.c b/drivers/staging/typec/tcpci.c index 11c2d37..ac6b418 100644 --- a/drivers/staging/typec/tcpci.c +++ b/drivers/staging/typec/tcpci.c @@ -218,12 +218,9 @@ static int tcpci_set_vconn(struct tcpc_dev *tcpc, bool enable) return ret; } - ret = regmap_write(tcpci->regmap, TCPC_POWER_CTRL, - enable ? TCPC_POWER_CTRL_VCONN_ENABLE : 0); - if (ret < 0) - return ret; - - return 0; + return regmap_update_bits(tcpci->regmap, TCPC_POWER_CTRL, + TCPC_POWER_CTRL_VCONN_ENABLE, + enable ? TCPC_POWER_CTRL_VCONN_ENABLE : 0); } static int tcpci_set_roles(struct tcpc_dev *tcpc, bool attached, -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
