Blackfin arch: overlay thread.usp over PT_USP

overlay thread.usp over PT_USP when getting the whole regfile to
match PT_USP behavior

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 5 insertions, 3 deletions

diff --git a/arch/blackfin/kernel/ptrace.c b/arch/blackfin/kernel/ptrace.c
index 4de44f387dd5..d5e6be2d5ed8 100644
--- a/arch/blackfin/kernel/ptrace.c
+++ b/arch/blackfin/kernel/ptrace.c
@@ -80,10 +80,12 @@ static inline struct pt_regs *get_user_regs(struct task_struct *task)
 /*
  * Get all user integer registers.
  */
-static inline int ptrace_getregs(struct task_struct *tsk, void __user * uregs)
+static inline int ptrace_getregs(struct task_struct *tsk, void __user *uregs)
 {
-        struct pt_regs *regs = get_user_regs(tsk);
-        return copy_to_user(uregs, regs, sizeof(struct pt_regs)) ? -EFAULT : 0;
+        struct pt_regs regs;
+        memcpy(&regs, get_user_regs(tsk), sizeof(regs));
+        regs.usp = tsk->thread.usp;
+        return copy_to_user(uregs, &regs, sizeof(struct pt_regs)) ? -EFAULT : 0;
 }
 
 /* Mapping from PT_xxx to the stack offset at which the register is