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>
diff --git a/drivers/dma/ioat/dma_v3.c b/drivers/dma/ioat/dma_v3.c
index a4798f0..44786ad 100644
--- a/drivers/dma/ioat/dma_v3.c
+++ b/drivers/dma/ioat/dma_v3.c
@@ -1376,6 +1376,8 @@
goto free_resources;
}
+ memset(page_address(dest), 0, PAGE_SIZE);
+
/* test for non-zero parity sum */
op = IOAT_OP_XOR_VAL;