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commitf79ee78767upstream. We need to bail out before adding/removing devices if we are going to -EPROBE_DEFER. Otherwise boot can get stuck in a probe deferral loop due to a long-standing issue in driver core (see commitfbc35b45f9("Add documentation on meaning of -EPROBE_DEFER")). Deregistering the altmode child device can potentially also trigger bugs in the DRM bridge implementation, which does not expect bridges to go away. [DB: slightly fixed commit message by adding the word 'commit'] Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Rob Clark <robdclark@chromium.org> Link: https://lore.kernel.org/r/20231213210644.8702-1-robdclark@gmail.com [ johan: rebase on 6.8-rc4, amend commit message and mention DRM ] Fixes:58ef4ece1e("soc: qcom: pmic_glink: Introduce base PMIC GLINK driver") Cc: <stable@vger.kernel.org> # 6.3 Cc: Bjorn Andersson <andersson@kernel.org> Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Bjorn Andersson <andersson@kernel.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20240217150228.5788-5-johan+linaro@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>