From f2336eeb199d3ed113e6d01c8020ea8919dd85c9 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 4 Mar 2008 19:40:09 +0000 Subject: [PATCH] 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 Acked-by: Shannon Nelson [chrisw@sous-sol.org: backport to 2.6.24.3] Signed-off-by: Chris Wright Signed-off-by: Greg Kroah-Hartman --- drivers/dma/ioat_dma.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/dma/ioat_dma.c b/drivers/dma/ioat_dma.c index 45e7b4666c7b..8cf542b2aed4 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; -- 2.39.5