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authorDan Williams <dan.j.williams@intel.com>2008-03-01 07:52:14 -0700
committerDan Williams <dan.j.williams@intel.com>2008-03-04 10:16:46 -0700
commit6497dcffe07b7c3d863f9899280c4f6eae999161 (patch)
tree2b57ca65f6be0bee163363d694a19052b6491bc7 /drivers/dma
parentec8670f1f795badedaa056a3a3245b9b82201747 (diff)
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
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/ioat_dma.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/dma/ioat_dma.c b/drivers/dma/ioat_dma.c
index dff38accc5c..4017d9e7acd 100644
--- a/drivers/dma/ioat_dma.c
+++ b/drivers/dma/ioat_dma.c
@@ -714,6 +714,7 @@ static struct dma_async_tx_descriptor *ioat1_dma_prep_memcpy(
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 @@ static struct dma_async_tx_descriptor *ioat2_dma_prep_memcpy(
new->len = len;
new->dst = dma_dest;
new->src = dma_src;
+ new->async_tx.ack = 0;
return &new->async_tx;
} else
return NULL;