[PATCH] ipmi: scope ipmi_si_irq_handler() to CONFIG_ACPI

[Pengpeng Hou]

In current linux.git (1954c4f01220), ipmi_si_irq_handler() is
defined and declared unconditionally. However, its only in-tree caller
is the ACPI GPE helper in drivers/char/ipmi/ipmi_si_platform.c, which
lives inside #ifdef CONFIG_ACPI.

Match the helper declaration and definition to that scope by wrapping
them in #ifdef CONFIG_ACPI. This fixes the config-scope mismatch and
reduces unnecessary code footprint for non-ACPI systems.

Signed-off-by: Pengpeng Hou <pengpeng.hou@xxxxxxxxxxxxxxxx>
---
diff --git a/drivers/char/ipmi/ipmi_si.h b/drivers/char/ipmi/ipmi_si.h
--- a/drivers/char/ipmi/ipmi_si.h
+++ b/drivers/char/ipmi/ipmi_si.h
@@
 int ipmi_si_add_smi(struct si_sm_io *io);
+#ifdef CONFIG_ACPI
 irqreturn_t ipmi_si_irq_handler(int irq, void *data);
+#endif
 void ipmi_irq_start_cleanup(struct si_sm_io *io);
 int ipmi_std_irq_setup(struct si_sm_io *io);
 void ipmi_irq_finish_setup(struct si_sm_io *io);
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@
 	spin_unlock_irqrestore(&(smi_info->si_lock), flags);
 }
 
+#ifdef CONFIG_ACPI
 irqreturn_t ipmi_si_irq_handler(int irq, void *data)
 {
 	struct smi_info *smi_info = data;
 	unsigned long   flags;
@@
 
 	return IRQ_HANDLED;
 }
+#endif
 
 static unsigned int ipmi_shift_irq_cleanup(unsigned int cleanup_period,
 					   struct si_sm_io *io)
 {