Gigabeat S/i.MX31: Take care of an interrupt priority inversion that can happen during PCM callback lockout when DVFS switches frequecies during the lockout, preventing a thread from unlocking the callback until DVFS finishes, causing an SSI FIFO underrun. Hadn't thought of an acceptable way to deal with it before.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28996 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 5 insertions, 0 deletions

diff --git a/firmware/target/arm/imx31/avic-imx31.h b/firmware/target/arm/imx31/avic-imx31.h
index 04a2856b50..ca48f85ba5 100644
--- a/firmware/target/arm/imx31/avic-imx31.h
+++ b/firmware/target/arm/imx31/avic-imx31.h
@@ -67,6 +67,11 @@ void avic_set_int_type(enum IMX31_INT_LIST ints, enum INT_TYPE intstype);
 #define AVIC_NIL_ENABLE  (-1)
 void avic_set_ni_level(int level);
 
+static inline void avic_mask_int(enum IMX31_INT_LIST ints)
+    { AVIC_INTDISNUM = ints; }
+
+static inline void avic_unmask_int(enum IMX31_INT_LIST ints)
+    { AVIC_INTENNUM = ints; }
 
 /* Call a service routine while allowing preemption by interrupts of higher
  * priority. Avoid using any app or other SVC stack by doing it with a mini