From: hao5781286@gmail.com (Axl-zhang)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v1] ARM:dmaengine:sun6i:fix the uninitialized value for v_lli
Date: Wed, 2 Nov 2016 13:31:12 +0800 [thread overview]
Message-ID: <20161102053112.GA8109@arx-xi> (raw)
dma_pool_alloc does not initialize the value of the newly allocated
block for the v_lli, and the uninitilize value make the tests failed
which is on pine64 with dmatest.
we can fix it just change the "|=" to "=" for the v_lli->cfg.
Signed-off-by: Hao Zhang <hao5781286@gmail.com>
---
drivers/dma/sun6i-dma.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c
index 3835fcd..52b48eb 100644
--- a/drivers/dma/sun6i-dma.c
+++ b/drivers/dma/sun6i-dma.c
@@ -578,7 +578,7 @@ static struct dma_async_tx_descriptor *sun6i_dma_prep_dma_memcpy(
burst = convert_burst(8);
width = convert_buswidth(DMA_SLAVE_BUSWIDTH_4_BYTES);
- v_lli->cfg |= DMA_CHAN_CFG_SRC_DRQ(DRQ_SDRAM) |
+ v_lli->cfg = DMA_CHAN_CFG_SRC_DRQ(DRQ_SDRAM) |
DMA_CHAN_CFG_DST_DRQ(DRQ_SDRAM) |
DMA_CHAN_CFG_DST_LINEAR_MODE |
DMA_CHAN_CFG_SRC_LINEAR_MODE |
--
2.7.4
next reply other threads:[~2016-11-02 5:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-02 5:31 Axl-zhang [this message]
2016-11-02 18:58 ` [PATCH v1] ARM:dmaengine:sun6i:fix the uninitialized value for v_lli Maxime Ripard
2016-11-14 5:06 ` Vinod Koul
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