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-rw-r--r--arch/arm/mach-mvf/mvf_sema4.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm/mach-mvf/mvf_sema4.c b/arch/arm/mach-mvf/mvf_sema4.c
index 31e40f6d02f0..4521d124f1b7 100644
--- a/arch/arm/mach-mvf/mvf_sema4.c
+++ b/arch/arm/mach-mvf/mvf_sema4.c
@@ -286,3 +286,13 @@ int mvf_sema4_unlock(MVF_SEMA4 *sema4)
}
EXPORT_SYMBOL(mvf_sema4_unlock);
+// return 0 on success (meaning it is set to us)
+int mvf_sema4_test(MVF_SEMA4 *sema4)
+{
+ if(!sema4)
+ return -EINVAL;
+
+ return (readb(MVF_IO_ADDRESS(MVF_SEMA4_BASE_ADDR) + sema4->gate_num)) == LOCK_VALUE ? 0 : 1;
+}
+EXPORT_SYMBOL(mvf_sema4_test);
+