[MIPS] Store sign-extend register values for PTRACE_GETREGS

A comment on ptrace_getregs() states "Registers are sign extended to
fill the available space." but it is not true.  Fix code to match the
comment.  Also fix casts on each caller to get rid of some warnings.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 9 insertions, 9 deletions

diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 999f7853de2..35234b92b9a 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -65,13 +65,13 @@ int ptrace_getregs(struct task_struct *child, __s64 __user *data)
         regs = task_pt_regs(child);
 
         for (i = 0; i < 32; i++)
-                __put_user(regs->regs[i], data + i);
-        __put_user(regs->lo, data + EF_LO - EF_R0);
-        __put_user(regs->hi, data + EF_HI - EF_R0);
-        __put_user(regs->cp0_epc, data + EF_CP0_EPC - EF_R0);
-        __put_user(regs->cp0_badvaddr, data + EF_CP0_BADVADDR - EF_R0);
-        __put_user(regs->cp0_status, data + EF_CP0_STATUS - EF_R0);
-        __put_user(regs->cp0_cause, data + EF_CP0_CAUSE - EF_R0);
+                __put_user((long)regs->regs[i], data + i);
+        __put_user((long)regs->lo, data + EF_LO - EF_R0);
+        __put_user((long)regs->hi, data + EF_HI - EF_R0);
+        __put_user((long)regs->cp0_epc, data + EF_CP0_EPC - EF_R0);
+        __put_user((long)regs->cp0_badvaddr, data + EF_CP0_BADVADDR - EF_R0);
+        __put_user((long)regs->cp0_status, data + EF_CP0_STATUS - EF_R0);
+        __put_user((long)regs->cp0_cause, data + EF_CP0_CAUSE - EF_R0);
 
         return 0;
 }
@@ -390,11 +390,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 }
 
         case PTRACE_GETREGS:
-                ret = ptrace_getregs(child, (__u64 __user *) data);
+                ret = ptrace_getregs(child, (__s64 __user *) data);
                 break;
 
         case PTRACE_SETREGS:
-                ret = ptrace_setregs(child, (__u64 __user *) data);
+                ret = ptrace_setregs(child, (__s64 __user *) data);
                 break;
 
         case PTRACE_GETFPREGS: