irqchip: vic: update the base IRQ member correctly

When passing 0 as the irq base the VIC driver will dynamically
allocate a number of consecutive interrupt descriptors at some
available number range. Make sure this number is recorded in
the state container rather than the passed-in zero argument
in this case.

Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/irqchip/irq-vic.c b/drivers/irqchip/irq-vic.c
index 8e21ae0bab46..70108c1491bc 100644
--- a/drivers/irqchip/irq-vic.c
+++ b/drivers/irqchip/irq-vic.c
@@ -273,7 +273,6 @@ static void __init vic_register(void __iomem *base, unsigned int irq,
         v->base = base;
         v->valid_sources = valid_sources;
         v->resume_sources = resume_sources;
-        v->irq = irq;
         set_handle_irq(vic_handle_irq);
         vic_id++;
         v->domain = irq_domain_add_simple(node, fls(valid_sources), irq,
@@ -282,6 +281,11 @@ static void __init vic_register(void __iomem *base, unsigned int irq,
         for (i = 0; i < fls(valid_sources); i++)
                 if (valid_sources & (1 << i))
                         irq_create_mapping(v->domain, i);
+        /* If no base IRQ was passed, figure out our allocated base */
+        if (irq)
+                v->irq = irq;
+        else
+                v->irq = irq_find_mapping(v->domain, 0);
 }
 
 static void vic_ack_irq(struct irq_data *d)