From: Huibin Hong <huibin.hong@rock-chips.com>
Date: Wed, 10 Oct 2018 09:00:32 +0000 (+0200)
Subject: spi: rockchip: initialize dma_slave_config properly
X-Git-Tag: v4.9.203~3
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c5e007b469c9b62807334504f79c3ca100a69a92;p=platform%2Fkernel%2Flinux-amlogic.git

spi: rockchip: initialize dma_slave_config properly

[ 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@rock-chips.com>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index 0f89c2169c24..3a94f465e8e0 100644
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -443,6 +443,9 @@ 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;