ioat: fix 'ack' handling, driver must ensure that 'ack' is zero
Initialize 'ack' to zero in case the descriptor has been recycled.
Prevents "kernel BUG at crypto/async_tx/async_xor.c:185!"
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Shannon Nelson <shannon.nelson@intel.com>
Cc: stable@kernel.org
diff --git a/drivers/dma/ioat_dma.c b/drivers/dma/ioat_dma.c
index dff38ac..4017d9e 100644
--- a/drivers/dma/ioat_dma.c
+++ b/drivers/dma/ioat_dma.c
@@ -714,6 +714,7 @@
new->len = len;
new->dst = dma_dest;
new->src = dma_src;
+ new->async_tx.ack = 0;
return &new->async_tx;
} else
return NULL;
@@ -741,6 +742,7 @@
new->len = len;
new->dst = dma_dest;
new->src = dma_src;
+ new->async_tx.ack = 0;
return &new->async_tx;
} else
return NULL;