On Fri, Sep 29, 2017 at 4:58 PM, Douglas Anderson <dianders at chromium.org> wrote:
> The function tcphy_phy_init() could return an error but the callers
> weren't checking the return value. They should. In at least one case
> while testing I saw the message "wait pma ready timeout" which
> indicates that tcphy_phy_init() really could return an error and we
> should account for it.
>
> Signed-off-by: Douglas Anderson <dianders at chromium.org>
Reviewed-by: Guenter Roeck <groeck at chromium.org>
> ---
>
> drivers/phy/rockchip/phy-rockchip-typec.c | 13 +++++++++----
> 1 file changed, 9 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/phy/rockchip/phy-rockchip-typec.c b/drivers/phy/rockchip/phy-rockchip-typec.c
> index 4d2c57f21d76..38831eebc934 100644
> --- a/drivers/phy/rockchip/phy-rockchip-typec.c
> +++ b/drivers/phy/rockchip/phy-rockchip-typec.c
> @@ -685,8 +685,11 @@ static int rockchip_usb3_phy_power_on(struct phy *phy)
> if (tcphy->mode == new_mode)
> goto unlock_ret;
>
> - if (tcphy->mode == MODE_DISCONNECT)
> - tcphy_phy_init(tcphy, new_mode);
> + if (tcphy->mode == MODE_DISCONNECT) {
> + ret = tcphy_phy_init(tcphy, new_mode);
> + if (ret)
> + goto unlock_ret;
> + }
>
> /* wait TCPHY for pipe ready */
> for (timeout = 0; timeout < 100; timeout++) {
> @@ -760,10 +763,12 @@ static int rockchip_dp_phy_power_on(struct phy *phy)
> */
> if (new_mode == MODE_DFP_DP && tcphy->mode != MODE_DISCONNECT) {
> tcphy_phy_deinit(tcphy);
> - tcphy_phy_init(tcphy, new_mode);
> + ret = tcphy_phy_init(tcphy, new_mode);
> } else if (tcphy->mode == MODE_DISCONNECT) {
> - tcphy_phy_init(tcphy, new_mode);
> + ret = tcphy_phy_init(tcphy, new_mode);
> }
> + if (ret)
> + goto unlock_ret;
>
> ret = readx_poll_timeout(readl, tcphy->base + DP_MODE_CTL,
> val, val & DP_MODE_A2, 1000,
> --
> 2.14.2.822.g60be5d43e6-goog
>
