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spi: rockchip: initialize dma_slave_config properly 

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>
This commit is contained in:
Huibin Hong 2018-10-10 11:00:32 +02:00 committed by Mark Brown
parent 940ec770c2
commit dd8fd2cbc7
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1 changed files with 3 additions and 0 deletions
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3
drivers/spi/spi-rockchip.c
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@ -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;