If a machine advertises Smart PC support but is missing policy data
show a debugging message to help clarify why Smart PC wasn't enabled.
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
---
drivers/platform/x86/amd/pmf/tee-if.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/platform/x86/amd/pmf/tee-if.c b/drivers/platform/x86/amd/pmf/tee-if.c
index 8b7e3f87702e..1359ab340f7c 100644
--- a/drivers/platform/x86/amd/pmf/tee-if.c
+++ b/drivers/platform/x86/amd/pmf/tee-if.c
@@ -252,8 +252,10 @@ static int amd_pmf_start_policy_engine(struct amd_pmf_dev *dev)
cookie = readl(dev->policy_buf + POLICY_COOKIE_OFFSET);
length = readl(dev->policy_buf + POLICY_COOKIE_LEN);
- if (cookie != POLICY_SIGN_COOKIE || !length)
+ if (cookie != POLICY_SIGN_COOKIE || !length) {
+ dev_dbg(dev->dev, "cookie doesn't match\n");
return -EINVAL;
+ }
/* Update the actual length */
dev->policy_sz = length + 512;
--
2.34.1
