On Wed, Apr 03, 2024 at 10:22:37AM -0700, Kuogee Hsieh wrote:
> Dmitry,
>
> Any more comments?
>
> On 3/29/2024 12:50 PM, Kuogee Hsieh wrote:
> > Currently qmp_combo_dp_power_on() always return 0 in regardless of
> > return value of cfg->configure_dp_phy(). This patch propagate
> > return value of cfg->configure_dp_phy() all the way back to caller.
> >
> > Changes in V3:
> > -- add v2 changes log
> >
> > Changes in V2:
> > -- add Fixes tag
> > -- add dev_err() to qmp_v3_configure_dp_phy()
> > -- add dev_err() to qmp_v4_configure_dp_phy()
> >
> > Fixes: 52e013d0bffa ("phy: qcom-qmp: Add support for DP in USB3+DP combo
> > phy")
> > Signed-off-by: Kuogee Hsieh <quic_khs...@quicinc.com>
> > Reviewed-by: Abhinav Kumar <quic_abhin...@quicinc.com>
> > ---
> > drivers/phy/qualcomm/phy-qcom-qmp-combo.c | 13 +++++++++----
> > 1 file changed, 9 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
> > b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
> > index 36632fa..513d99d 100644
> > --- a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
> > +++ b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
> > @@ -2343,8 +2343,10 @@ static int qmp_v3_configure_dp_phy(struct qmp_combo
> > *qmp)
> > writel(0x05, qmp->dp_dp_phy + QSERDES_V3_DP_PHY_TX2_TX3_LANE_CTL);
> > ret = qmp_combo_configure_dp_clocks(qmp);
> > - if (ret)
> > + if (ret) {
> > + dev_err(qmp->dev, "dp phy configure failed, err=%d\n", ret);
> > return ret;
> > + }
dev_err() calls are not related to the fix itself. Please split them to
a separate patch.
> > writel(0x04, qmp->dp_dp_phy + QSERDES_DP_PHY_AUX_CFG2);
> > writel(0x01, qmp->dp_dp_phy + QSERDES_DP_PHY_CFG);
> > @@ -2519,8 +2521,10 @@ static int qmp_v4_configure_dp_phy(struct qmp_combo
> > *qmp)
> > int ret;
> > ret = qmp_v456_configure_dp_phy(qmp);
> > - if (ret < 0)
> > + if (ret < 0) {
> > + dev_err(qmp->dev, "dp phy configure failed, err=%d\n", ret);
> > return ret;
> > + }
> > /*
> > * At least for 7nm DP PHY this has to be done after enabling link
> > @@ -2754,6 +2758,7 @@ static int qmp_combo_dp_power_on(struct phy *phy)
> > const struct qmp_phy_cfg *cfg = qmp->cfg;
> > void __iomem *tx = qmp->dp_tx;
> > void __iomem *tx2 = qmp->dp_tx2;
> > + int ret;
> > mutex_lock(&qmp->phy_mutex);
> > @@ -2766,11 +2771,11 @@ static int qmp_combo_dp_power_on(struct phy *phy)
> > cfg->configure_dp_tx(qmp);
> > /* Configure link rate, swing, etc. */
> > - cfg->configure_dp_phy(qmp);
> > + ret = cfg->configure_dp_phy(qmp);
> > mutex_unlock(&qmp->phy_mutex);
> > - return 0;
> > + return ret;
> > }
> > static int qmp_combo_dp_power_off(struct phy *phy)
--
With best wishes
Dmitry
