mfd: Don't try to flag IRQ 0 as a wm831x wake source

If we've not got a primary IRQ we shouldn't be trying to flag IRQ 0 as a
wake source.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

diff --git a/drivers/mfd/wm831x-irq.c b/drivers/mfd/wm831x-irq.c
index bec4d05..2be9628 100644 (file)
--- a/drivers/mfd/wm831x-irq.c
+++ b/drivers/mfd/wm831x-irq.c
@@ -565,17 +565,6 @@ int wm831x_irq_init(struct wm831x *wm831x, int irq)
        wm831x_set_bits(wm831x, WM831X_IRQ_CONFIG,
                        WM831X_IRQ_OD, i);
 
-       /* Try to flag /IRQ as a wake source; there are a number of
-        * unconditional wake sources in the PMIC so this isn't
-        * conditional but we don't actually care *too* much if it
-        * fails.
-        */
-       ret = enable_irq_wake(irq);
-       if (ret != 0) {
-               dev_warn(wm831x->dev, "Can't enable IRQ as wake source: %d\n",
-                        ret);
-       }
-
        wm831x->irq = irq;
 
        /* Register them with genirq */
@@ -597,6 +586,18 @@ int wm831x_irq_init(struct wm831x *wm831x, int irq)
        }
 
        if (irq) {
+               /* Try to flag /IRQ as a wake source; there are a number of
+                * unconditional wake sources in the PMIC so this isn't
+                * conditional but we don't actually care *too* much if it
+                * fails.
+                */
+               ret = enable_irq_wake(irq);
+               if (ret != 0) {
+                       dev_warn(wm831x->dev,
+                                "Can't enable IRQ as wake source: %d\n",
+                                ret);
+               }
+
                ret = request_threaded_irq(irq, NULL, wm831x_irq_thread,
                                           IRQF_TRIGGER_LOW | IRQF_ONESHOT,
                                           "wm831x", wm831x);