platform/x86/amd/pmf: Propagate PMF-TA return codes

[ Upstream commit 9ba93cb8212d62bccd8b41b8adb6656abf37280a ]

In the amd_pmf_invoke_cmd_init() function within the PMF driver ensure
that the actual result from the PMF-TA is returned rather than a generic
EIO. This change allows for proper handling of errors originating from the
PMF-TA.

Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Co-developed-by: Patil Rajesh Reddy <Patil.Reddy@amd.com>
Signed-off-by: Patil Rajesh Reddy <Patil.Reddy@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20250305045842.4117767-1-Shyam-sundar.S-k@amd.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/platform/x86/amd/pmf/tee-if.c b/drivers/platform/x86/amd/pmf/tee-if.c
index 19c27b6e46663c6567ef998c6c34ae053e251d7f..0ad571783d12619e7ff5a263c933159eb219e49e 100644 (file)
--- a/drivers/platform/x86/amd/pmf/tee-if.c
+++ b/drivers/platform/x86/amd/pmf/tee-if.c
@@ -323,7 +323,7 @@ static int amd_pmf_start_policy_engine(struct amd_pmf_dev *dev)
        } else {
                dev_err(dev->dev, "ta invoke cmd init failed err: %x\n", res);
                dev->smart_pc_enabled = false;
-               return -EIO;
+               return res;
        }
 
        return 0;