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-rw-r--r--drivers/dahdi/dahdi-base.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/dahdi/dahdi-base.c b/drivers/dahdi/dahdi-base.c
index 991816f..4741720 100644
--- a/drivers/dahdi/dahdi-base.c
+++ b/drivers/dahdi/dahdi-base.c
@@ -357,6 +357,10 @@ u_char __dahdi_lin2a[16384];
static u_char defgain[256];
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 10)
+#define __RW_LOCK_UNLOCKED() RW_LOCK_UNLOCKED
+#endif
+
#ifdef DEFINE_RWLOCK
static DEFINE_RWLOCK(zone_lock);
static DEFINE_RWLOCK(chan_lock);