From: Jarkko Sakkinen <[email protected]>

Using -EFAULT as the tpm_ret_to_err() fallback error code causes makes it
incompatible on how trusted keys transmute TPM return codes.

Change the fallback as -EPERM in order to gain compatibility with trusted
keys. In addition, map TPM_RC_HASH to -EINVAL in order to be compatible
with tpm2_seal_trusted() return values.

Signed-off-by: Jarkko Sakkinen <[email protected]>
Reviewed-by: Stefano Garzarella <[email protected]>
---
v6:
- No changes.
v5:
- No changes.
v4:
- No changes.
v3:
- Removed fixes tag as it hardly categorizes as a bug fix.
v2:
- Split trusted_tpm2 change to a separate patch.
---
 include/linux/tpm.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/linux/tpm.h b/include/linux/tpm.h
index eb0ff071bcae..0e9e043f728c 100644
--- a/include/linux/tpm.h
+++ b/include/linux/tpm.h
@@ -456,8 +456,10 @@ static inline ssize_t tpm_ret_to_err(ssize_t ret)
                return 0;
        case TPM2_RC_SESSION_MEMORY:
                return -ENOMEM;
+       case TPM2_RC_HASH:
+               return -EINVAL;
        default:
-               return -EFAULT;
+               return -EPERM;
        }
 }
 
-- 
2.39.5


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