[PATCH 02/10] platform/x86/intel/ifs: Refactor image loading code

[Jithu Joseph <jithu.joseph@intel.com>]

IFS image loading flow is slightly different for newer IFS
generations.

In preparation for adding support for newer IFS generations,
refactor portions of existing image loading code for reuse.

Signed-off-by: Jithu Joseph <jithu.joseph@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Tested-by: Pengfei Xu <pengfei.xu@intel.com>
---
 drivers/platform/x86/intel/ifs/load.c | 31 ++++++++++++++++-----------
 1 file changed, 19 insertions(+), 12 deletions(-)

diff --git a/drivers/platform/x86/intel/ifs/load.c b/drivers/platform/x86/intel/ifs/load.c
index cefd0d886cfd..851c97cc6a6b 100644
--- a/drivers/platform/x86/intel/ifs/load.c
+++ b/drivers/platform/x86/intel/ifs/load.c
@@ -80,6 +80,23 @@ static struct metadata_header *find_meta_data(void *ucode, unsigned int meta_typ
 	return NULL;
 }
 
+static void hashcopy_err_message(struct device *dev, u32 err_code)
+{
+	if (err_code >= ARRAY_SIZE(scan_hash_status))
+		dev_err(dev, "invalid error code 0x%x for hash copy\n", err_code);
+	else
+		dev_err(dev, "Hash copy error : %s\n", scan_hash_status[err_code]);
+}
+
+static void auth_err_message(struct device *dev, u32 err_code)
+{
+	if (err_code >= ARRAY_SIZE(scan_authentication_status))
+		dev_err(dev, "invalid error code 0x%x for authentication\n", err_code);
+	else
+		dev_err(dev, "Chunk authentication error : %s\n",
+			scan_authentication_status[err_code]);
+}
+
 /*
  * To copy scan hashes and authenticate test chunks, the initiating cpu must point
  * to the EDX:EAX to the test image in linear address.
@@ -109,11 +126,7 @@ static void copy_hashes_authenticate_chunks(struct work_struct *work)
 
 	if (!hashes_status.valid) {
 		ifsd->loading_error = true;
-		if (err_code >= ARRAY_SIZE(scan_hash_status)) {
-			dev_err(dev, "invalid error code 0x%x for hash copy\n", err_code);
-			goto done;
-		}
-		dev_err(dev, "Hash copy error : %s", scan_hash_status[err_code]);
+		hashcopy_err_message(dev, err_code);
 		goto done;
 	}
 
@@ -133,13 +146,7 @@ static void copy_hashes_authenticate_chunks(struct work_struct *work)
 
 		if (err_code) {
 			ifsd->loading_error = true;
-			if (err_code >= ARRAY_SIZE(scan_authentication_status)) {
-				dev_err(dev,
-					"invalid error code 0x%x for authentication\n", err_code);
-				goto done;
-			}
-			dev_err(dev, "Chunk authentication error %s\n",
-				scan_authentication_status[err_code]);
+			auth_err_message(dev, err_code);
 			goto done;
 		}
 	}
-- 
2.25.1