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Johan Hovold d2d7b8e880 phy: qcom-qmp-combo: fix drm bridge registration 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")). This could potentially also trigger a bug in the DRM bridge implementation which does not expect bridges to go away even if device links may avoid triggering this (when enabled). Move registration of the DRM aux bridge 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: `35921910bb` ("phy: qcom: qmp-combo: switch to DRM_AUX_BRIDGE") Fixes: `1904c3f578` ("phy: qcom-qmp-combo: Introduce drm_bridge") Cc: stable@vger.kernel.org # 6.5 Cc: Bjorn Andersson <quic_bjorande@quicinc.com> Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.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/20240217150228.5788-6-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>		History 2024-03-06 20:37:37 +05:30
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README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.