Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[mv-sheeva.git] / drivers / mfd / wm831x-core.c

diff --git a/drivers/mfd/wm831x-core.c b/drivers/mfd/wm831x-core.c
index 07101e9e1cba14dfc71aaaf4f9300c2660c3e032..f2ab025ad97a3cad7532ad95b21684cf4561ff5e 100644 (file)
--- a/drivers/mfd/wm831x-core.c
+++ b/drivers/mfd/wm831x-core.c
@@ -18,6 +18,7 @@
 #include <linux/bcd.h>
 #include <linux/delay.h>
 #include <linux/mfd/core.h>
+#include <linux/slab.h>
 
 #include <linux/mfd/wm831x/core.h>
 #include <linux/mfd/wm831x/pdata.h>
@@ -348,6 +349,9 @@ int wm831x_auxadc_read(struct wm831x *wm831x, enum wm831x_auxadc input)
                goto disable;
        }
 
+       /* If an interrupt arrived late clean up after it */
+       try_wait_for_completion(&wm831x->auxadc_done);
+
        /* Ignore the result to allow us to soldier on without IRQ hookup */
        wait_for_completion_timeout(&wm831x->auxadc_done, msecs_to_jiffies(5));