diff mbox series

spi: rockchip: Unmask IRQ at the final to avoid preemption

Message ID 20220617124251.5051-1-jon.lin@rock-chips.com
State Accepted
Commit 419bc8f681a0dc63588cee693b6d45e7caa6006c
Headers show
Series spi: rockchip: Unmask IRQ at the final to avoid preemption | expand

Commit Message

Jon Lin June 17, 2022, 12:42 p.m. UTC 
Avoid pio_write process is preempted, resulting in abnormal state.

Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
Signed-off-by: Jon <jon.lin@rock-chips.com>
---

 drivers/spi/spi-rockchip.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index a08215eb9e14..79242dc5272d 100644
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -381,15 +381,18 @@  static int rockchip_spi_prepare_irq(struct rockchip_spi *rs,
 	rs->tx_left = rs->tx ? xfer->len / rs->n_bytes : 0;
 	rs->rx_left = xfer->len / rs->n_bytes;
 
-	if (rs->cs_inactive)
-		writel_relaxed(INT_RF_FULL | INT_CS_INACTIVE, rs->regs + ROCKCHIP_SPI_IMR);
-	else
-		writel_relaxed(INT_RF_FULL, rs->regs + ROCKCHIP_SPI_IMR);
+	writel_relaxed(0xffffffff, rs->regs + ROCKCHIP_SPI_ICR);
+
 	spi_enable_chip(rs, true);
 
 	if (rs->tx_left)
 		rockchip_spi_pio_writer(rs);
 
+	if (rs->cs_inactive)
+		writel_relaxed(INT_RF_FULL | INT_CS_INACTIVE, rs->regs + ROCKCHIP_SPI_IMR);
+	else
+		writel_relaxed(INT_RF_FULL, rs->regs + ROCKCHIP_SPI_IMR);
+
 	/* 1 means the transfer is in progress */
 	return 1;
 }