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Commitad3dd9592b("soc: qcom: pmic_glink: disable UCSI on sc8280xp") disabled UCSI shortly after it had been enabled to fix a regression that was observed on the Lenovo ThinkPad X13s. Specifically, disconnecting an external display would trigger a system error and hypervisor reset but no one cared enough to track down the bug at the time. The same issue was recently observed on X Elite machines, and commitf47eba045e("usb: typec: ucsi: Set orientation as none when connector is unplugged") worked around the underlying issue by setting the connector orientation to 'none' on disconnect events to avoid having the PHY driver crash the machine in one orientation. Enable UCSI support also on sc8280xp now that the DisplayPort disconnect crashes are gone. Cc: Abel Vesa <abel.vesa@linaro.org> Cc: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Abel Vesa <abel.vesa@linaro.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> Link: https://lore.kernel.org/r/20250326124944.6338-1-johan+linaro@kernel.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
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 reStructuredText 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.