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22c0dd1911The ingenic CRTC atomic_enable() implementation will indirectly call drm_atomic_get_private_obj_state() through ingenic_drm_get_priv_state(). drm_atomic_get_private_obj_state() will either return the new state for the object in the global state if it exists, or will allocate a new one and add it to the global state. atomic_enable() however isn't allowed to modify the global state. So what the implementation should use is the drm_atomic_get_new_private_obj_state() helper to get the new state for the CRTC, without performing an extra allocation. We still need to make sure the private state will be part of the global state by the time atomic_enable runs, so we still need to call ingenic_drm_get_priv_state() in atomic_check. We can then call ingenic_drm_get_new_priv_state() in atomic_enable, which is a wrapper around drm_atomic_get_new_private_obj_state(). Reported-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://lore.kernel.org/r/20250930-drm-no-more-existing-state-v5-37-eeb9e1287907@kernel.org Signed-off-by: Maxime Ripard <mripard@kernel.org> |
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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 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.