linux-kernel - [PATCH 4.19 23/84] mtd: onenand: omap2: Pass correct flags for prep_dma

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Message-Id: <20200116231716.388547311@linuxfoundation.org>
Date:   Fri, 17 Jan 2020 00:17:57 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Aaro Koskinen <aaro.koskinen@....fi>,
        Peter Ujfalusi <peter.ujfalusi@...com>,
        "H. Nikolaus Schaller" <hns@...delico.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>
Subject: [PATCH 4.19 23/84] mtd: onenand: omap2: Pass correct flags for prep_dma_memcpy

From: Peter Ujfalusi <peter.ujfalusi@...com>

commit 8bcef0d54067077cf9a6cb129022c77559926e8c upstream.

The commit converting the driver to DMAengine was missing the flags for
the memcpy prepare call.
It went unnoticed since the omap-dma driver was ignoring them.

Fixes: 3ed6a4d1de2c5 (" mtd: onenand: omap2: Convert to use dmaengine for memcp")
Reported-by: Aaro Koskinen <aaro.koskinen@....fi>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
Tested-by: H. Nikolaus Schaller <hns@...delico.com>
Tested-by: Aaro Koskinen <aaro.koskinen@....fi>
Signed-off-by: Miquel Raynal <miquel.raynal@...tlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/mtd/nand/onenand/omap2.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/mtd/nand/onenand/omap2.c
+++ b/drivers/mtd/nand/onenand/omap2.c
@@ -341,7 +341,8 @@ static inline int omap2_onenand_dma_tran
 	struct dma_async_tx_descriptor *tx;
 	dma_cookie_t cookie;

-	tx = dmaengine_prep_dma_memcpy(c->dma_chan, dst, src, count, 0);
+	tx = dmaengine_prep_dma_memcpy(c->dma_chan, dst, src, count,
+				       DMA_CTRL_ACK | DMA_PREP_INTERRUPT);
 	if (!tx) {
 		dev_err(&c->pdev->dev, "Failed to prepare DMA memcpy\n");
 		return -EIO;