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path: root/drivers/spi/spi-rockchip.c
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Diffstat (limited to 'drivers/spi/spi-rockchip.c')
-rw-r--r--drivers/spi/spi-rockchip.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index daabbabd26b0..1a777dc261d6 100644
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -437,6 +437,7 @@ static void rockchip_spi_prepare_dma(struct rockchip_spi *rs)
rs->state &= ~TXBUSY;
spin_unlock_irqrestore(&rs->lock, flags);
+ rxdesc = NULL;
if (rs->rx) {
rxconf.direction = rs->dma_rx.direction;
rxconf.src_addr = rs->dma_rx.addr;
@@ -453,6 +454,7 @@ static void rockchip_spi_prepare_dma(struct rockchip_spi *rs)
rxdesc->callback_param = rs;
}
+ txdesc = NULL;
if (rs->tx) {
txconf.direction = rs->dma_tx.direction;
txconf.dst_addr = rs->dma_tx.addr;
@@ -470,7 +472,7 @@ static void rockchip_spi_prepare_dma(struct rockchip_spi *rs)
}
/* rx must be started before tx due to spi instinct */
- if (rs->rx) {
+ if (rxdesc) {
spin_lock_irqsave(&rs->lock, flags);
rs->state |= RXBUSY;
spin_unlock_irqrestore(&rs->lock, flags);
@@ -478,7 +480,7 @@ static void rockchip_spi_prepare_dma(struct rockchip_spi *rs)
dma_async_issue_pending(rs->dma_rx.ch);
}
- if (rs->tx) {
+ if (txdesc) {
spin_lock_irqsave(&rs->lock, flags);
rs->state |= TXBUSY;
spin_unlock_irqrestore(&rs->lock, flags);