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drm/amd/display: Add NULL check for function pointer in dcn32_set_output_transfer_func

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This commit adds a null check for the set_output_gamma function pointer
in the dcn32_set_output_transfer_func function. Previously,
set_output_gamma was being checked for null, but then it was being
dereferenced without any null check. This could lead to a null pointer
dereference if set_output_gamma is null.

To fix this, we now ensure that set_output_gamma is not null before
dereferencing it. We do this by adding a null check for set_output_gamma
before the call to set_output_gamma.

Cc: Tom Chung <chiahsuan.chung@amd.com>
Cc: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Cc: Roman Li <roman.li@amd.com>
Cc: Alex Hung <alex.hung@amd.com>
Cc: Aurabindo Pillai <aurabindo.pillai@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Srinivasan Shanmugam 2024-07-31 13:15:00 +05:30 committed by Alex Deucher
parent dd340acd42
commit 28574b08c7
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c
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@ -582,7 +582,9 @@ bool dcn32_set_output_transfer_func(struct dc *dc,
}
}
mpc->funcs->set_output_gamma(mpc, mpcc_id, params);
if (mpc->funcs->set_output_gamma)
mpc->funcs->set_output_gamma(mpc, mpcc_id, params);
return ret;
}