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| Filename | Latest commit message | Latest commit date |
|---|---|---|
1ccc2b0f6c
[ Upstream commit 258905cb9a6414be5c9ca4aa20ef855f8dc894d4 ]
We use komeda_crtc_normalize_zpos to normalize zpos of affected planes
to their blending zorder in CU. If there's only one slave plane in
affected planes and its layer_split property is enabled, order++ for
its split layer, so that when calculating the normalized_zpos
of master planes, the split layer of the slave plane is included, but
the max_slave_zorder does not include the split layer and keep zero
because there's only one slave plane in affacted planes, although we
actually use two slave layers in this commit.
In most cases, this bug does not result in a commit failure, but assume
the following situation:
slave_layer 0: zpos = 0, layer split enabled, normalized_zpos =
0;(use slave_layer 2 as its split layer)
master_layer 0: zpos = 2, layer_split enabled, normalized_zpos =
2;(use master_layer 2 as its split layer)
master_layer 1: zpos = 4, normalized_zpos = 4;
master_layer 3: zpos = 5, normalized_zpos = 5;
kcrtc_st->max_slave_zorder = 0;
When we use master_layer 3 as a input of CU in function
komeda_compiz_set_input and check it with function
komeda_component_check_input, the parameter idx is equal to
normailzed_zpos minus max_slave_zorder, the value of idx is 5
and is euqal to CU's max_active_inputs, so that
komeda_component_check_input returns a -EINVAL value.
To fix the bug described above, when calculating the max_slave_zorder
with the layer_split enabled, count the split layer in this calculation
directly.
Signed-off-by: hongchi.peng <hongchi.peng@siengine.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240826024517.3739-1-hongchi.peng@siengine.com
Signed-off-by: Sasha Levin <sashal@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 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.