[PATCH] dmatest: correct raid6 PQ test
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From: Anatolij Gustschin on 15 Feb 2010 16:40 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(a)denx.de> Cc: Dan Williams <dan.j.williams(a)intel.com> Cc: Maciej Sosnowski <maciej.sosnowski(a)intel.com> --- drivers/dma/dmatest.c | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c index 948d563..9ae3d11 100644 --- a/drivers/dma/dmatest.c +++ b/drivers/dma/dmatest.c @@ -237,7 +237,7 @@ static int dmatest_func(void *data) 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 @@ static int dmatest_func(void *data) } 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 @@ static int dmatest_func(void *data) 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); } -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |