commit f2336eeb199d3ed113e6d01c8020ea8919dd85c9
Author: Dan Williams <[EMAIL PROTECTED]>
Date: Tue Mar 4 19:40:09 2008 +0000
ioat: fix 'ack' handling, driver must ensure that 'ack' is zero
commit: 6497dcffe07b7c3d863f9899280c4f6eae999161
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 <[EMAIL PROTECTED]>
Acked-by: Shannon Nelson <[EMAIL PROTECTED]>
[EMAIL PROTECTED]: backport to 2.6.24.3]
Signed-off-by: Chris Wright <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
diff --git a/drivers/dma/ioat_dma.c b/drivers/dma/ioat_dma.c
index 45e7b46..8cf542b 100644
--- a/drivers/dma/ioat_dma.c
+++ b/drivers/dma/ioat_dma.c
@@ -726,6 +726,7 @@ static struct dma_async_tx_descriptor
*ioat1_dma_prep_memcpy(
if (new) {
new->len = len;
+ new->async_tx.ack = 0;
return &new->async_tx;
} else
return NULL;
@@ -749,6 +750,7 @@ static struct dma_async_tx_descriptor
*ioat2_dma_prep_memcpy(
if (new) {
new->len = len;
+ new->async_tx.ack = 0;
return &new->async_tx;
} else
return NULL;
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