drm/amd/display: Use pre-allocated temp struct for bounding box update

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[Why]

There is a theoretical problem in prior patches for reducing the stack
size of *update_bw_bounding_box() functions.

By modifying the soc.clock_limits[n] struct directly, this can cause
unintended behavior as the for loop attempts to swap rows in
clock_limits[n]. A temporary struct is still required to make sure we
stay functinoally equivalent.

[How]

Add a temporary clock_limits table to the SOC struct, and use it when
swapping rows.

Signed-off-by: Leo Li <sunpeng.li@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Leo Li 2022-06-08 12:17:44 -04:00 • committed by Alex Deucher

parent ea937ad6e9

commit 1f474c8742

4 changed files with 82 additions and 56 deletions

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33

drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c

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34

drivers/gpu/drm/amd/display/dc/dml/dcn301/dcn301_fpu.c

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64

drivers/gpu/drm/amd/display/dc/dml/dcn31/dcn31_fpu.c

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5

drivers/gpu/drm/amd/display/dc/dml/display_mode_structs.h

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