mfd: db8500-prcmu: Fix irqdomain usage

This fixes two issues with the DB8500 PRCMU irqdomain:
- You have to state the irq base 0 to get a linear domain
  for the DT case from irq_domain_add_simple()
- The irqdomain was not used to translate the initial irq
  request using irq_create_mapping() making the linear
  case fail as it was lacking a proper descriptor.

I took this opportunity to fix two lines of whitespace
errors in related code as I was anyway messing around with
it.

Cc: stable@kernel.org
Acked-by Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 9 insertions, 4 deletions

diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
index dc8826d8d69d..268f45d42394 100644
--- a/drivers/mfd/db8500-prcmu.c
+++ b/drivers/mfd/db8500-prcmu.c
@@ -2524,7 +2524,7 @@ static bool read_mailbox_0(void)
 
                 for (n = 0; n < NUM_PRCMU_WAKEUPS; n++) {
                         if (ev & prcmu_irq_bit[n])
-                                generic_handle_irq(IRQ_PRCMU_BASE + n);
+                                generic_handle_irq(irq_find_mapping(db8500_irq_domain, n));
                 }
                 r = true;
                 break;
@@ -2737,13 +2737,14 @@ static int db8500_irq_map(struct irq_domain *d, unsigned int virq,
 }
 
 static struct irq_domain_ops db8500_irq_ops = {
-        .map    = db8500_irq_map,
-        .xlate  = irq_domain_xlate_twocell,
+        .map    = db8500_irq_map,
+        .xlate  = irq_domain_xlate_twocell,
 };
 
 static int db8500_irq_init(struct device_node *np)
 {
-        int irq_base = -1;
+        int irq_base = 0;
+        int i;
 
         /* In the device tree case, just take some IRQs */
         if (!np)
@@ -2758,6 +2759,10 @@ static int db8500_irq_init(struct device_node *np)
                 return -ENOSYS;
         }
 
+        /* All wakeups will be used, so create mappings for all */
+        for (i = 0; i < NUM_PRCMU_WAKEUPS; i++)
+                irq_create_mapping(db8500_irq_domain, i);
+
         return 0;
 }