dmatest: correct raid6 PQ test
The number of PQ sources specified by module parameter "pq_sources"
is always forced odd to fit into dmatest's destination verificaton
scheme. But number of PQ sources and coefficients as passed to the
driver's prep_dma_pq() is not adjusted accordingly.
Fix it now to get correct PQ testing results in the case passed
"pq_sources" parameter is even.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 8b90516..cc0f329 100644
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -237,7 +237,7 @@
dma_cookie_t cookie;
enum dma_status status;
enum dma_ctrl_flags flags;
- u8 pq_coefs[pq_sources];
+ u8 pq_coefs[pq_sources + 1];
int ret;
int src_cnt;
int dst_cnt;
@@ -257,7 +257,7 @@
} else if (thread->type == DMA_PQ) {
src_cnt = pq_sources | 1; /* force odd to ensure dst = src */
dst_cnt = 2;
- for (i = 0; i < pq_sources; i++)
+ for (i = 0; i < src_cnt; i++)
pq_coefs[i] = 1;
} else
goto err_srcs;
@@ -355,7 +355,7 @@
for (i = 0; i < dst_cnt; i++)
dma_pq[i] = dma_dsts[i] + dst_off;
tx = dev->device_prep_dma_pq(chan, dma_pq, dma_srcs,
- pq_sources, pq_coefs,
+ src_cnt, pq_coefs,
len, flags);
}