From: Huibin Hong huibin.hong@rock-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@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 --- 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 035767c020720..f42ae9efb255c 100644 --- a/drivers/spi/spi-rockchip.c +++ b/drivers/spi/spi-rockchip.c @@ -444,6 +444,9 @@ static void 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;