irqchip: bcm7120-l2: Use gc->mask_cache to simplify suspend/resume functions

The cached value already incorporates irq_fwd_mask, and was saved the
last time an IRQ was enabled/disabled.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lkml.kernel.org/r/1415342669-30640-11-git-send-email-cernekee@gmail.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

1 files changed, 3 insertions, 8 deletions

diff --git a/drivers/irqchip/irq-bcm7120-l2.c b/drivers/irqchip/irq-bcm7120-l2.c
index b70679f8bb65..984112112042 100644
--- a/drivers/irqchip/irq-bcm7120-l2.c
+++ b/drivers/irqchip/irq-bcm7120-l2.c
@@ -37,7 +37,6 @@ struct bcm7120_l2_intc_data {
         bool can_wake;
         u32 irq_fwd_mask;
         u32 irq_map_mask;
-        u32 saved_mask;
 };
 
 static void bcm7120_l2_intc_irq_handle(unsigned int irq, struct irq_desc *desc)
@@ -62,14 +61,11 @@ static void bcm7120_l2_intc_suspend(struct irq_data *d)
 {
         struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
         struct bcm7120_l2_intc_data *b = gc->private;
-        u32 reg;
 
         irq_gc_lock(gc);
-        /* Save the current mask and the interrupt forward mask */
-        b->saved_mask = __raw_readl(b->base + IRQEN) | b->irq_fwd_mask;
         if (b->can_wake) {
-                reg = b->saved_mask | gc->wake_active;
-                __raw_writel(reg, b->base + IRQEN);
+                __raw_writel(gc->mask_cache | gc->wake_active,
+                             b->base + IRQEN);
         }
         irq_gc_unlock(gc);
 }
@@ -77,11 +73,10 @@ static void bcm7120_l2_intc_suspend(struct irq_data *d)
 static void bcm7120_l2_intc_resume(struct irq_data *d)
 {
         struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
-        struct bcm7120_l2_intc_data *b = gc->private;
 
         /* Restore the saved mask */
         irq_gc_lock(gc);
-        __raw_writel(b->saved_mask, b->base + IRQEN);
+        __raw_writel(gc->mask_cache, b->base + IRQEN);
         irq_gc_unlock(gc);
 }