irqchip/sunxi-nmi: Const-ify sunxi_sc_nmi_reg_offs structures

The sunxi_sc_nmi_reg_offs, which hold the register offsets for the
various variants, is never modified, and only used at init time within
the init functions referenced by IRQCHIP_DECLARE, which themselves are
tagged __init.

Const-ify the sunxi_sc_nmi_reg_offs structures, and tag them as
__initconst.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

diff --git a/drivers/irqchip/irq-sunxi-nmi.c b/drivers/irqchip/irq-sunxi-nmi.c
index 76f2431..e713ec6 100644 (file)
--- a/drivers/irqchip/irq-sunxi-nmi.c
+++ b/drivers/irqchip/irq-sunxi-nmi.c
@@ -52,19 +52,19 @@ struct sunxi_sc_nmi_reg_offs {
        u32 enable;
 };
 
-static struct sunxi_sc_nmi_reg_offs sun6i_reg_offs = {
+static const struct sunxi_sc_nmi_reg_offs sun6i_reg_offs __initconst = {
        .ctrl   = SUN6I_NMI_CTRL,
        .pend   = SUN6I_NMI_PENDING,
        .enable = SUN6I_NMI_ENABLE,
 };
 
-static struct sunxi_sc_nmi_reg_offs sun7i_reg_offs = {
+static const struct sunxi_sc_nmi_reg_offs sun7i_reg_offs __initconst = {
        .ctrl   = SUN7I_NMI_CTRL,
        .pend   = SUN7I_NMI_PENDING,
        .enable = SUN7I_NMI_ENABLE,
 };
 
-static struct sunxi_sc_nmi_reg_offs sun9i_reg_offs = {
+static const struct sunxi_sc_nmi_reg_offs sun9i_reg_offs __initconst = {
        .ctrl   = SUN9I_NMI_CTRL,
        .pend   = SUN9I_NMI_PENDING,
        .enable = SUN9I_NMI_ENABLE,
@@ -142,7 +142,7 @@ static int sunxi_sc_nmi_set_type(struct irq_data *data, unsigned int flow_type)
 }
 
 static int __init sunxi_sc_nmi_irq_init(struct device_node *node,
-                                       struct sunxi_sc_nmi_reg_offs *reg_offs)
+                                       const struct sunxi_sc_nmi_reg_offs *reg_offs)
 {
        struct irq_domain *domain;
        struct irq_chip_generic *gc;