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During suspend/resume process all connectors are explicitly disabled and then reenabled. However resume fails because of the connector_status check: [dpu error]connector not connected 3 [drm:drm_mode_config_helper_resume [drm_kms_helper]] *ERROR* Failed to resume (-22) It doesn't make sense to check for the Writeback connected status (and other drivers don't perform such check), so drop the check. It wasn't a problem before the commit71174f362d("drm/msm/dpu: move writeback's atomic_check to dpu_writeback.c"), since encoder's atomic_check() is called under a different conditions that the connector's atomic_check() (e.g. it is not called if there is no connected CRTC or if the corresponding connector is not a part of the new state). Fixes:71174f362d("drm/msm/dpu: move writeback's atomic_check to dpu_writeback.c") Cc: stable@vger.kernel.org Reported-by: Leonard Lausen <leonard@lausen.nl> Closes: https://gitlab.freedesktop.org/drm/msm/-/issues/57 Tested-by: Leonard Lausen <leonard@lausen.nl> # on sc7180 lazor Tested-by: György Kurucz <me@kuruczgy.com> Reviewed-by: Johan Hovold <johan+linaro@kernel.org> Tested-by: Johan Hovold <johan+linaro@kernel.org> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com> Tested-by: Jessica Zhang <quic_jesszhan@quicinc.com> # Trogdor (sc7180) Patchwork: https://patchwork.freedesktop.org/patch/627828/ Link: https://lore.kernel.org/r/20241209-dpu-fix-wb-v4-1-7fe93059f9e0@linaro.org Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
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.