crypto: pcrypt - Dont calulate a callback cpu on empty callback cpumask

[linux-flexiantxendom0-natty.git] / crypto / pcrypt.c

diff --git a/crypto/pcrypt.c b/crypto/pcrypt.c
index 7153a50..794c172 100644 (file)
--- a/crypto/pcrypt.c
+++ b/crypto/pcrypt.c
@@ -82,6 +82,9 @@ static int pcrypt_do_parallel(struct padata_priv *padata, unsigned int *cb_cpu,
        if (cpumask_test_cpu(cpu, cpumask->mask))
                        goto out;
 
+       if (!cpumask_weight(cpumask->mask))
+                       goto out;
+
        cpu_index = cpu % cpumask_weight(cpumask->mask);
 
        cpu = cpumask_first(cpumask->mask);