linux-kernel - [PATCH AUTOSEL 4.19 200/209] spi: rockchip: initialize dma_slave

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Message-Id: <20191113015025.9685-200-sashal@kernel.org>
Date:   Tue, 12 Nov 2019 20:50:16 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Huibin Hong <huibin.hong@...k-chips.com>,
        Emil Renner Berthing <kernel@...il.dk>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>, linux-spi@...r.kernel.org,
        linux-rockchip@...ts.infradead.org
Subject: [PATCH AUTOSEL 4.19 200/209] spi: rockchip: initialize dma_slave_config properly

From: Huibin Hong <huibin.hong@...k-chips.com>

[ Upstream commit dd8fd2cbc73f8650f651da71fc61a6e4f30c1566 ]

The rxconf and txconf structs are allocated on the
stack, so make sure we zero them before filling out
the relevant fields.

Signed-off-by: Huibin Hong <huibin.hong@...k-chips.com>
Signed-off-by: Emil Renner Berthing <kernel@...il.dk>
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/spi/spi-rockchip.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index fdcf3076681b5..185bbdce62b14 100644
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -445,6 +445,9 @@ static int rockchip_spi_prepare_dma(struct rockchip_spi *rs)
 	struct dma_slave_config rxconf, txconf;
 	struct dma_async_tx_descriptor *rxdesc, *txdesc;
 
+	memset(&rxconf, 0, sizeof(rxconf));
+	memset(&txconf, 0, sizeof(txconf));
+
 	spin_lock_irqsave(&rs->lock, flags);
 	rs->state &= ~RXBUSY;
 	rs->state &= ~TXBUSY;
-- 
2.20.1