When compiling without CONFIG_DEBUG_RODATA the following
compiler warning is generated:

arch/x86/kernel/kgdb.c: In function 'kgdb_arch_set_breakpoint':
arch/x86/kernel/kgdb.c:749: warning: unused variable 'opc'

The variable instantiation needs to be inside the #ifdef to
make the warning go away.

Reported-by: Thiago Rafael Becker <[email protected]>
Signed-off-by: Jason Wessel <[email protected]>
---
 arch/x86/kernel/kgdb.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c
index 3f61904..836f832 100644
--- a/arch/x86/kernel/kgdb.c
+++ b/arch/x86/kernel/kgdb.c
@@ -746,7 +746,9 @@ void kgdb_arch_set_pc(struct pt_regs *regs, unsigned long 
ip)
 int kgdb_arch_set_breakpoint(struct kgdb_bkpt *bpt)
 {
        int err;
+#ifdef CONFIG_DEBUG_RODATA
        char opc[BREAK_INSTR_SIZE];
+#endif /* CONFIG_DEBUG_RODATA */
 
        bpt->type = BP_BREAKPOINT;
        err = probe_kernel_read(bpt->saved_instr, (char *)bpt->bpt_addr,
-- 
1.7.9.5

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