padata: Fix cpu index counting

The counting of the cpu index got lost with a recent commit.
This patch restores it. This fixes a hang of the parallel worker
threads on cpu hotplug.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 1 insertions, 0 deletions

diff --git a/kernel/padata.c b/kernel/padata.c
index 526f9ea2fcc8..4287868bbe37 100644
--- a/kernel/padata.c
+++ b/kernel/padata.c
@@ -408,6 +408,7 @@ static void padata_init_pqueues(struct parallel_data *pd)
                 pqueue = per_cpu_ptr(pd->pqueue, cpu);
                 pqueue->pd = pd;
                 pqueue->cpu_index = cpu_index;
+                cpu_index++;
 
                 __padata_list_init(&pqueue->reorder);
                 __padata_list_init(&pqueue->parallel);