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drm/amd/display: fix buffer overruns warnings

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[Why & How]
Fixes a warning by adding bounds checks and index validation in dml2_0
sources to address static analysis warnings. Ensures safe array access and
prevents out-of-bounds reads by validating indices before use, improving
robustness and reliability in the affected files.

Reviewed-by: Austin Zheng <austin.zheng@amd.com>
Signed-off-by: Gaghik Khachatrian <gaghik.khachatrian@amd.com>
Signed-off-by: James Lin <pinglei.lin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Gaghik Khachatrian
2026-04-22 22:12:25 -04:00
committed by Alex Deucher
parent d05a1c347c
commit 531fd5766d
1 changed files with 1 additions and 1 deletions
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drivers/gpu/drm/amd/display/dc/dml2_0/dml21/src/dml2_mcg/dml2_mcg_dcn42.c
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@@ -22,7 +22,7 @@ static bool build_min_clk_table_coarse_grained(const struct dml2_soc_bb *soc_bb,
min_table->dram_bw_table.entries[i].pre_derate_dram_bw_kbps =
uclk_to_dram_bw_kbps(soc_bb->clk_table.uclk.clk_values_khz[i], &soc_bb->clk_table.dram_config, soc_bb->clk_table.wck_ratio.clk_values_khz[i]);
min_table->dram_bw_table.entries[i].min_uclk_khz = soc_bb->clk_table.uclk.clk_values_khz[i];
} else {
} else if (soc_bb->clk_table.uclk.num_clk_values > 0) {
min_table->dram_bw_table.entries[i].pre_derate_dram_bw_kbps = min_table->dram_bw_table.entries[soc_bb->clk_table.uclk.num_clk_values - 1].pre_derate_dram_bw_kbps;
min_table->dram_bw_table.entries[i].min_uclk_khz = soc_bb->clk_table.uclk.clk_values_khz[soc_bb->clk_table.uclk.num_clk_values - 1];
}