[PATCH v3] phy/qcom-qmp-combo: propagate correct return value at phy_power_on()

[Stephen Boyd]

Quoting Kuogee Hsieh (2024-03-29 12:50:35)
> 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.

Is this found via code inspection or because the phy is failing to power
on sometimes? I ask because I'm looking at a DP bug on Trogdor with
chromeos' v6.6 based kernel and wondering if this is related.

Also, is the call to phy_power_on() going to be checked in
the DP driver?

 $ git grep -n phy_power_on -- drivers/gpu/drm/msm/dp/
 drivers/gpu/drm/msm/dp/dp_ctrl.c:1453:  phy_power_on(phy);