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[ Upstream commit14d9a37c95] This reverts commitf4b34faa08. Since commitf4b34faa08("drm/imx: Annotate dma-fence critical section in commit path") the following possible circular dependency is detected: [ 5.001811] ====================================================== [ 5.001817] WARNING: possible circular locking dependency detected [ 5.001824] 5.14.9-01225-g45da36cc6fcc-dirty #1 Tainted: G W [ 5.001833] ------------------------------------------------------ [ 5.001838] kworker/u8:0/7 is trying to acquire lock: [ 5.001848] c1752080 (regulator_list_mutex){+.+.}-{3:3}, at: regulator_lock_dependent+0x40/0x294 [ 5.001903] [ 5.001903] but task is already holding lock: [ 5.001909] c176df78 (dma_fence_map){++++}-{0:0}, at: imx_drm_atomic_commit_tail+0x10/0x160 [ 5.001957] [ 5.001957] which lock already depends on the new lock. ... Revert it for now. Tested on a imx6q-sabresd. Fixes:f4b34faa08("drm/imx: Annotate dma-fence critical section in commit path") Signed-off-by: Fabio Estevam <festevam@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20211104001112.4035691-1-festevam@gmail.com Signed-off-by: Sasha Levin <sashal@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 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.