nds32: remove dump_instr

dump_inst has a return before actually doing anything, so just drop the
whole thing.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Nick Hu <nickhu@andestech.com>
Acked-by: Greentime Hu <green.hu@gmail.com>
Signed-off-by: Greentime Hu <green.hu@gmail.com>

diff --git a/arch/nds32/kernel/traps.c b/arch/nds32/kernel/traps.c
index 6a9772b..b66f889 100644 (file)
--- a/arch/nds32/kernel/traps.c
+++ b/arch/nds32/kernel/traps.c
@@ -62,40 +62,6 @@ void dump_mem(const char *lvl, unsigned long bottom, unsigned long top)
 
 EXPORT_SYMBOL(dump_mem);
 
-static void dump_instr(struct pt_regs *regs)
-{
-       unsigned long addr = instruction_pointer(regs);
-       mm_segment_t fs;
-       char str[sizeof("00000000 ") * 5 + 2 + 1], *p = str;
-       int i;
-
-       return;
-       /*
-        * We need to switch to kernel mode so that we can use __get_user
-        * to safely read from kernel space.  Note that we now dump the
-        * code first, just in case the backtrace kills us.
-        */
-       fs = get_fs();
-       set_fs(KERNEL_DS);
-
-       pr_emerg("Code: ");
-       for (i = -4; i < 1; i++) {
-               unsigned int val, bad;
-
-               bad = __get_user(val, &((u32 *) addr)[i]);
-
-               if (!bad) {
-                       p += sprintf(p, i == 0 ? "(%08x) " : "%08x ", val);
-               } else {
-                       p += sprintf(p, "bad PC value");
-                       break;
-               }
-       }
-       pr_emerg("Code: %s\n", str);
-
-       set_fs(fs);
-}
-
 #define LOOP_TIMES (100)
 static void __dump(struct task_struct *tsk, unsigned long *base_reg,
                   const char *loglvl)
@@ -179,7 +145,6 @@ void die(const char *str, struct pt_regs *regs, int err)
 
        if (!user_mode(regs) || in_interrupt()) {
                dump_mem("Stack: ", regs->sp, (regs->sp + PAGE_SIZE) & PAGE_MASK);
-               dump_instr(regs);
                dump_stack();
        }