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phy: qcom-qmp-combo: fix type-c switch registration

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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 fbc35b45f9 ("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: 2851117f8f ("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>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20240217150228.5788-7-johan+linaro@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Johan Hovold 2024-02-17 16:02:28 +01:00 committed by Vinod Koul
parent d2d7b8e880
commit 47b412c1ea
1 changed files with 4 additions and 4 deletions
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8
drivers/phy/qualcomm/phy-qcom-qmp-combo.c
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@ -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;