1 files changed, 16 insertions, 5 deletions

diff --git a/drivers/acpi/apei/apei-base.c b/drivers/acpi/apei/apei-base.c
index 73fd0c7487c1..4a904a4bf05f 100644
--- a/drivers/acpi/apei/apei-base.c
+++ b/drivers/acpi/apei/apei-base.c
@@ -445,11 +445,15 @@ EXPORT_SYMBOL_GPL(apei_resources_sub);
 int apei_resources_request(struct apei_resources *resources,
                            const char *desc)
 {
-        struct apei_res *res, *res_bak;
+        struct apei_res *res, *res_bak = NULL;
         struct resource *r;
+        int rc;
 
-        apei_resources_sub(resources, &apei_resources_all);
+        rc = apei_resources_sub(resources, &apei_resources_all);
+        if (rc)
+                return rc;
 
+        rc = -EINVAL;
         list_for_each_entry(res, &resources->iomem, list) {
                 r = request_mem_region(res->start, res->end - res->start,
                                        desc);
@@ -475,7 +479,11 @@ int apei_resources_request(struct apei_resources *resources,
                 }
         }
 
-        apei_resources_merge(&apei_resources_all, resources);
+        rc = apei_resources_merge(&apei_resources_all, resources);
+        if (rc) {
+                pr_err(APEI_PFX "Fail to merge resources!\n");
+                goto err_unmap_ioport;
+        }
 
         return 0;
 err_unmap_ioport:
@@ -491,12 +499,13 @@ err_unmap_iomem:
                         break;
                 release_mem_region(res->start, res->end - res->start);
         }
-        return -EINVAL;
+        return rc;
 }
 EXPORT_SYMBOL_GPL(apei_resources_request);
 
 void apei_resources_release(struct apei_resources *resources)
 {
+        int rc;
         struct apei_res *res;
 
         list_for_each_entry(res, &resources->iomem, list)
@@ -504,7 +513,9 @@ void apei_resources_release(struct apei_resources *resources)
         list_for_each_entry(res, &resources->ioport, list)
                 release_region(res->start, res->end - res->start);
 
-        apei_resources_sub(&apei_resources_all, resources);
+        rc = apei_resources_sub(&apei_resources_all, resources);
+        if (rc)
+                pr_err(APEI_PFX "Fail to sub resources!\n");
 }
 EXPORT_SYMBOL_GPL(apei_resources_release);