[PATCH v3 5/6] platform/x86/intel/vsec: Return real error codes from registration path

["David E. Box" <david.e.box@linux.intel.com>]

Stop collapsing registration results into booleans. Make
intel_vsec_walk_header() return int and propagate the first non-zero error
from intel_vsec_register_device(). intel_vsec_register() now returns that
error directly and 0 on success.

This preserves success behavior while surfacing meaningful errors instead
of hiding them behind a bool/-ENODEV, which makes debugging and probe
ordering issues clearer.

Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---

v3:
  - No change

v2:
  - No change (previous patch 3)

 drivers/platform/x86/intel/vsec.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/platform/x86/intel/vsec.c b/drivers/platform/x86/intel/vsec.c
index 675074c90b79..4aeb0728b435 100644
--- a/drivers/platform/x86/intel/vsec.c
+++ b/drivers/platform/x86/intel/vsec.c
@@ -461,20 +461,19 @@ static int intel_vsec_register_device(struct device *dev,
 	return -EAGAIN;
 }
 
-static bool intel_vsec_walk_header(struct device *dev,
-				   const struct intel_vsec_platform_info *info)
+static int intel_vsec_walk_header(struct device *dev,
+				  const struct intel_vsec_platform_info *info)
 {
 	struct intel_vsec_header **header = info->headers;
-	bool have_devices = false;
 	int ret;
 
 	for ( ; *header; header++) {
 		ret = intel_vsec_register_device(dev, *header, info, info->base_addr);
-		if (!ret)
-			have_devices = true;
+		if (ret)
+			return ret;
 	}
 
-	return have_devices;
+	return 0;
 }
 
 static bool intel_vsec_walk_dvsec(struct pci_dev *pdev,
@@ -580,10 +579,7 @@ int intel_vsec_register(struct device *dev,
 	if (!dev || !info || !info->headers)
 		return -EINVAL;
 
-	if (!intel_vsec_walk_header(dev, info))
-		return -ENODEV;
-	else
-		return 0;
+	return intel_vsec_walk_header(dev, info);
 }
 EXPORT_SYMBOL_NS_GPL(intel_vsec_register, "INTEL_VSEC");
 
-- 
2.43.0