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drm/amd/display: Fix potential NULL pointer dereferences in 'dcn10_set_output_transfer_func()'
[ Upstream commit9ccfe80d02
] The 'stream' pointer is used in dcn10_set_output_transfer_func() before the check if 'stream' is NULL. Fixes the below: drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn10/dcn10_hwseq.c:1892 dcn10_set_output_transfer_func() warn: variable dereferenced before check 'stream' (see line 1875) Fixes:ddef02de0d
("drm/amd/display: add null checks before logging") Cc: Wyatt Wood <wyatt.wood@amd.com> Cc: Anthony Koo <Anthony.Koo@amd.com> Cc: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Cc: Aurabindo Pillai <aurabindo.pillai@amd.com> Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com> Reviewed-by: Anthony Koo <Anthony.Koo@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -1832,6 +1832,9 @@ bool dcn10_set_output_transfer_func(struct dc *dc, struct pipe_ctx *pipe_ctx,
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{
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struct dpp *dpp = pipe_ctx->plane_res.dpp;
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if (!stream)
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return false;
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if (dpp == NULL)
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return false;
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@ -1854,8 +1857,8 @@ bool dcn10_set_output_transfer_func(struct dc *dc, struct pipe_ctx *pipe_ctx,
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} else
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dpp->funcs->dpp_program_regamma_pwl(dpp, NULL, OPP_REGAMMA_BYPASS);
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if (stream != NULL && stream->ctx != NULL &&
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stream->out_transfer_func != NULL) {
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if (stream->ctx &&
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stream->out_transfer_func) {
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log_tf(stream->ctx,
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stream->out_transfer_func,
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dpp->regamma_params.hw_points_num);
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