[PATCH 09/14] drm/amd/display: Fix potential NULL dereference

[Zaeem Mohamed]

From: Wayne Lin <wayne....@amd.com>

Fix NULL_RETURNS error caught by Coverity.
=> firmware_info32 might be NULL. Check it before dereference.

Fixes: 352f9a9451ec ("drm/amd/display/dc: add support for oem i2c in 
atom_firmware_info_v3_1")

Reviewed-by: Wayne Lin <wayne....@amd.com>
Signed-off-by: Wayne Lin <wayne....@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.moha...@amd.com>
---
 drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c 
b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
index 1d2c6019efac..d967065eea47 100644
--- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
+++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
@@ -1792,7 +1792,7 @@ static enum bp_result get_firmware_info_v3_1(
        dce_info = GET_IMAGE(struct atom_display_controller_info_v4_1,
                        DATA_TABLES(dce_info));
 
-       if (!firmware_info || !dce_info)
+       if (!firmware_info || !firmware_info32 || !dce_info)
                return BP_RESULT_BADBIOSTABLE;
 
        memset(info, 0, sizeof(*info));
-- 
2.34.1