On Sat, 17 Feb 2024 at 17:03, Johan Hovold johan+linaro@kernel.org wrote:

Due to a long-standing issue in driver core, drivers may not probe defer after having registered child devices to avoid triggering a probe deferral loop (see fbc35b45f9f6 ("Add documentation on meaning of -EPROBE_DEFER")).

Move registration of the typec switch to after looking up clocks and other resources.

Note that PHY creation can in theory also trigger a probe deferral when a 'phy' supply is used. This does not seem to affect the QMP PHY driver but the PHY subsystem should be reworked to address this (i.e. by separating initialisation and registration of the PHY).

Fixes: 2851117f8f42 ("phy: qcom-qmp-combo: Introduce orientation switching") Cc: stable@vger.kernel.org # 6.5 Cc: Bjorn Andersson quic_bjorande@quicinc.com Signed-off-by: Johan Hovold johan+linaro@kernel.org

---

drivers/phy/qualcomm/phy-qcom-qmp-combo.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)

Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org

Note to myself (or to anybody else, who has spare hands), we should probably implement the same changes for phy-qcom-qmp-usbc.c

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c index e19d6a084f10..17c4ad7553a5 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c @@ -3562,10 +3562,6 @@ static int qmp_combo_probe(struct platform_device *pdev) if (ret) return ret;

•   ret = qmp_combo_typec_switch_register(qmp);
  

•   if (ret)
  

•           return ret;
  

•   /* Check for legacy binding with child nodes. */
    usb_np = of_get_child_by_name(dev->of_node, "usb3-phy");
    if (usb_np) {
  

@@ -3585,6 +3581,10 @@ static int qmp_combo_probe(struct platform_device *pdev) if (ret) goto err_node_put;

•   ret = qmp_combo_typec_switch_register(qmp);
  

•   if (ret)
  

•           goto err_node_put;
  

•   ret = drm_aux_bridge_register(dev);
    if (ret)
            goto err_node_put;
  

-- 2.43.0