signal/arc: Push siginfo generation into unhandled_exception

Pass signr, sicode, and address into unhandled_exception as explicit
parameters instead of members of struct siginfo.  Then in unhandled
exception generate and send the siginfo using force_sig_fault.

This keeps the code simpler and less error prone.

Acked-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>

diff --git a/arch/arc/kernel/traps.c b/arch/arc/kernel/traps.c
index b123558..a7fcbc0 100644 (file)
--- a/arch/arc/kernel/traps.c
+++ b/arch/arc/kernel/traps.c
@@ -42,21 +42,22 @@ void die(const char *str, struct pt_regs *regs, unsigned long address)
  *  -for kernel, chk if due to copy_(to|from)_user, otherwise die()
  */
 static noinline int
-unhandled_exception(const char *str, struct pt_regs *regs, siginfo_t *info)
+unhandled_exception(const char *str, struct pt_regs *regs,
+                   int signo, int si_code, void __user *addr)
 {
        if (user_mode(regs)) {
                struct task_struct *tsk = current;
 
-               tsk->thread.fault_address = (__force unsigned int)info->si_addr;
+               tsk->thread.fault_address = (__force unsigned int)addr;
 
-               force_sig_info(info->si_signo, info, tsk);
+               force_sig_fault(signo, si_code, addr, tsk);
 
        } else {
                /* If not due to copy_(to|from)_user, we are doomed */
                if (fixup_exception(regs))
                        return 0;
 
-               die(str, regs, (unsigned long)info->si_addr);
+               die(str, regs, (unsigned long)addr);
        }
 
        return 1;
@@ -64,16 +65,9 @@ unhandled_exception(const char *str, struct pt_regs *regs, siginfo_t *info)
 
 #define DO_ERROR_INFO(signr, str, name, sicode) \
 int name(unsigned long address, struct pt_regs *regs) \
-{                                              \
-       siginfo_t info;                         \
-                                               \
-       clear_siginfo(&info);                   \
-       info.si_signo = signr;                  \
-       info.si_errno = 0;                      \
-       info.si_code  = sicode;                 \
-       info.si_addr = (void __user *)address;  \
-                                               \
-       return unhandled_exception(str, regs, &info);\
+{                                                              \
+       return unhandled_exception(str, regs, signr, sicode,    \
+                                  (void __user *)address);     \
 }
 
 /*