This is a note to let you know that I've just added the patch titled
ioatdma: Fix bug in selftest after removal of DMA_MEMSET.
to the 3.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ioatdma-fix-bug-in-selftest-after-removal-of-dma_memset.patch
and it can be found in the queue-3.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ac7d631f7d9f9e4e6116c4a72b6308067d0a2226 Mon Sep 17 00:00:00 2001
From: Dave Jiang <dave.jiang@xxxxxxxxx>
Date: Wed, 6 Nov 2013 08:50:09 -0700
Subject: ioatdma: Fix bug in selftest after removal of DMA_MEMSET.
From: Dave Jiang <dave.jiang@xxxxxxxxx>
commit ac7d631f7d9f9e4e6116c4a72b6308067d0a2226 upstream.
Commit 48a9db4 (3.11) removed the memset op in the xor selftest for ioatdma.
The issue is that with the removal of that op, it never replaced the memset
with a CPU memset. The memory being operated on is expected to be zeroes but
was not. This is causing the xor selftest to fail.
Signed-off-by: Dave Jiang <dave.jiang@xxxxxxxxx>
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/dma/ioat/dma_v3.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/dma/ioat/dma_v3.c
+++ b/drivers/dma/ioat/dma_v3.c
@@ -1545,6 +1545,8 @@ static int ioat_xor_val_self_test(struct
goto free_resources;
}
+ memset(page_address(dest), 0, PAGE_SIZE);
+
/* test for non-zero parity sum */
op = IOAT_OP_XOR_VAL;
Patches currently in stable-queue which might be from dave.jiang@xxxxxxxxx are
queue-3.12/ioatdma-fix-selection-of-16-vs-8-source-path.patch
queue-3.12/ioatdma-fix-sed-pool-selection.patch
queue-3.12/ioatdma-fix-bug-in-selftest-after-removal-of-dma_memset.patch
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