X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=kernel%2Frcutiny.c;h=bc845960c63a69adcf30f41c1aa785e15542bfee;hb=d46195ebd6bafd899b4324427dea3cd1e6365de7;hp=da775c87f27f6aa146bf9b929f72fe0e386d8b41;hpb=6681ba7ec480bc839584fd0817991d248b4b9e44;p=pandora-kernel.git

diff --git a/kernel/rcutiny.c b/kernel/rcutiny.c
index da775c87f27f..bc845960c63a 100644
--- a/kernel/rcutiny.c
+++ b/kernel/rcutiny.c
@@ -22,13 +22,12 @@
  * For detailed explanation of Read-Copy Update mechanism see -
  *		Documentation/RCU
  */
-#include <linux/moduleparam.h>
 #include <linux/completion.h>
 #include <linux/interrupt.h>
 #include <linux/notifier.h>
 #include <linux/rcupdate.h>
 #include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/mutex.h>
 #include <linux/sched.h>
 #include <linux/types.h>
@@ -161,6 +160,11 @@ static void __rcu_process_callbacks(struct rcu_ctrlblk *rcp)
 
 	/* Move the ready-to-invoke callbacks to a local list. */
 	local_irq_save(flags);
+	if (rcp->donetail == &rcp->rcucblist) {
+		/* No callbacks ready, so just leave. */
+		local_irq_restore(flags);
+		return;
+	}
 	RCU_TRACE(trace_rcu_batch_start(rcp->name, 0, -1));
 	list = rcp->rcucblist;
 	rcp->rcucblist = *rcp->donetail;