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ioatdma: Fix bug in selftest after removal of DMA_MEMSET. 

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.

Cc: <stable@vger.kernel.org>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dave Jiang 2013-11-06 08:50:09 -07:00 committed by Dan Williams
parent 50137a7df9
commit ac7d631f7d
1 changed files with 2 additions and 0 deletions
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2
drivers/dma/ioat/dma_v3.c
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@ -1376,6 +1376,8 @@ static int ioat_xor_val_self_test(struct ioatdma_device *device)
goto free_resources; goto free_resources;
} }
memset(page_address(dest), 0, PAGE_SIZE);
/* test for non-zero parity sum */ /* test for non-zero parity sum */
op = IOAT_OP_XOR_VAL; op = IOAT_OP_XOR_VAL;