[PATCH AUTOSEL 6.11 216/244] drm/amd/pm: ensure the fw_info is not null before using it

Sasha Levin
2024-09-25T11:52:24Z

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

[ Upstream commit 186fb12e7a7b038c2710ceb2fb74068f1b5d55a4 ]

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

Signed-off-by: Tim Huang <tim.huang@amd.com>
Reviewed-by: Jesse Zhang <jesse.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@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 ca1c7ae8d146d..f06b29e33ba45 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/processpptables.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/processpptables.c
@@ -1183,6 +1183,8 @@ 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