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09e530657e
In order for suspend/resume reprobing to work, we need to be able to perform sideband communications during suspend/resume, along with runtime PM suspend/resume. In order to do so, we also need to make sure that nouveau doesn't bother grabbing a runtime PM reference to do so, since otherwise we'll start deadlocking runtime PM again. Note that we weren't able to do this before, because of the DP MST helpers processing UP requests from topologies in the same context as drm_dp_mst_hpd_irq() which would have caused us to open ourselves up to receiving hotplug events and deadlocking with runtime suspend/resume. Now that those requests are handled asynchronously, this change should be completely safe. Cc: Juston Li <juston.li@intel.com> Cc: Imre Deak <imre.deak@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Harry Wentland <hwentlan@amd.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Sean Paul <sean@poorly.run> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191022023641.8026-10-lyude@redhat.com |
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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.