[PATCH AUTOSEL 6.6 124/139] drm/amd/pm: ensure the fw_info is not null before using it

[Sasha Levin]

From: Tim Huang <tim.huang at amd.com>

[ Upstream commit 186fb12e7a7b038c2710ceb2fb74068f1b5d55a4 ]

This resolves the dereference null return value warning
reported by Coverity.

Signed-off-by: Tim Huang <tim.huang at amd.com>
Reviewed-by: Jesse Zhang <jesse.zhang at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Sasha Levin <sashal at kernel.org>
---
 drivers/gpu/drm/amd/pm/powerplay/hwmgr/processpptables.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/processpptables.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/processpptables.c
index 5794b64507bf9..56a2257525806 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/processpptables.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/processpptables.c
@@ -1185,6 +1185,8 @@ static int init_overdrive_limits(struct pp_hwmgr *hwmgr,
 	fw_info = smu_atom_get_data_table(hwmgr->adev,
 			 GetIndexIntoMasterTable(DATA, FirmwareInfo),
 			 &size, &frev, &crev);
+	PP_ASSERT_WITH_CODE(fw_info != NULL,
+			    "Missing firmware info!", return -EINVAL);
 
 	if ((fw_info->ucTableFormatRevision == 1)
 	    && (le16_to_cpu(fw_info->usStructureSize) >= sizeof(ATOM_FIRMWARE_INFO_V1_4)))
-- 
2.43.0