arm64: ptrace: avoid using HW_BREAKPOINT_EMPTY for disabled events

[~andy/linux] / arch / arm64 / kernel / ptrace.c

diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c
index 6777a2192b83846f1065f442f5777d4092e9bc0c..6a8928bba03c9e8135c4481b497268f7018ca393 100644 (file)
--- a/arch/arm64/kernel/ptrace.c
+++ b/arch/arm64/kernel/ptrace.c
@@ -214,31 +214,29 @@ static int ptrace_hbp_fill_attr_ctrl(unsigned int note_type,
 {
        int err, len, type, disabled = !ctrl.enabled;
 
-       if (disabled) {
-               len = 0;
-               type = HW_BREAKPOINT_EMPTY;
-       } else {
-               err = arch_bp_generic_fields(ctrl, &len, &type);
-               if (err)
-                       return err;
-
-               switch (note_type) {
-               case NT_ARM_HW_BREAK:
-                       if ((type & HW_BREAKPOINT_X) != type)
-                               return -EINVAL;
-                       break;
-               case NT_ARM_HW_WATCH:
-                       if ((type & HW_BREAKPOINT_RW) != type)
-                               return -EINVAL;
-                       break;
-               default:
+       attr->disabled = disabled;
+       if (disabled)
+               return 0;
+
+       err = arch_bp_generic_fields(ctrl, &len, &type);
+       if (err)
+               return err;
+
+       switch (note_type) {
+       case NT_ARM_HW_BREAK:
+               if ((type & HW_BREAKPOINT_X) != type)
                        return -EINVAL;
-               }
+               break;
+       case NT_ARM_HW_WATCH:
+               if ((type & HW_BREAKPOINT_RW) != type)
+                       return -EINVAL;
+               break;
+       default:
+               return -EINVAL;
        }
 
        attr->bp_len    = len;
        attr->bp_type   = type;
-       attr->disabled  = disabled;
 
        return 0;
 }