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drm/amd/display: Skip inactive planes within ModeSupportAndSystemConfiguration

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[ Upstream commit a54f7e866c ]

[Why]
Coverity reports Memory - illegal accesses.

[How]
Skip inactive planes.

Reviewed-by: Alex Hung <alex.hung@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Hersen Wu <hersenxs.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Hersen Wu 2024-04-26 16:39:37 -04:00 committed by Greg Kroah-Hartman
parent 3dc6bb57da
commit 8406158a54
1 changed files with 6 additions and 1 deletions
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7
drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c
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@ -1099,8 +1099,13 @@ void ModeSupportAndSystemConfiguration(struct display_mode_lib *mode_lib)
// Total Available Pipes Support Check // Total Available Pipes Support Check
for (k = 0; k < mode_lib->vba.NumberOfActivePlanes; ++k) { for (k = 0; k < mode_lib->vba.NumberOfActivePlanes; ++k) {
total_pipes += mode_lib->vba.DPPPerPlane[k];
pipe_idx = get_pipe_idx(mode_lib, k); pipe_idx = get_pipe_idx(mode_lib, k);
if (pipe_idx == -1) {
ASSERT(0);
continue; // skip inactive planes
}
total_pipes += mode_lib->vba.DPPPerPlane[k];
if (mode_lib->vba.cache_pipes[pipe_idx].clks_cfg.dppclk_mhz > 0.0) if (mode_lib->vba.cache_pipes[pipe_idx].clks_cfg.dppclk_mhz > 0.0)
mode_lib->vba.DPPCLK[k] = mode_lib->vba.cache_pipes[pipe_idx].clks_cfg.dppclk_mhz; mode_lib->vba.DPPCLK[k] = mode_lib->vba.cache_pipes[pipe_idx].clks_cfg.dppclk_mhz;
else else