Input: cyapa - do not set otherwise unused variable

[firefly-linux-kernel-4.4.55.git] / mm / pagewalk.c

diff --git a/mm/pagewalk.c b/mm/pagewalk.c
index 75c1f2878519171139ae2d0b6f1e24809067ab4a..29f2f8b853ae51be4f9e35fbc1495ad69297ff82 100644 (file)
--- a/mm/pagewalk.c
+++ b/mm/pagewalk.c
@@ -265,8 +265,15 @@ int walk_page_range(unsigned long start, unsigned long end,
                        vma = vma->vm_next;
 
                        err = walk_page_test(start, next, walk);
-                       if (err > 0)
+                       if (err > 0) {
+                               /*
+                                * positive return values are purely for
+                                * controlling the pagewalk, so should never
+                                * be passed to the callers.
+                                */
+                               err = 0;
                                continue;
+                       }
                        if (err < 0)
                                break;
                }