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[1/7] spi: rockchip: initialize dma_slave_config properly

Message ID 20181010090038.20834-2-kernel@esmil.dk (mailing list archive)
State Accepted
Commit dd8fd2cbc73f8650f651da71fc61a6e4f30c1566
Headers show
Series Enable spi dma on Rockchip RK3399 | expand

Commit Message

Emil Renner Berthing Oct. 10, 2018, 9 a.m. UTC 
From: Huibin Hong <huibin.hong@rock-chips.com>

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>
---
 drivers/spi/spi-rockchip.c | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index fdcf3076681b..185bbdce62b1 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;