spi: rockchip: clear interrupt status in error handler

The interrupt status bit of the previous error data transmition will
affect the next operation and cause continuous SPI transmission failure.

Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
Link: https://lore.kernel.org/r/20220216014028.8123-7-jon.lin@rock-chips.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index 8b4d56ee21938387cd72394fdb8c743d73c564d6..cdc16eecaf6b581ec11735d33bd5de6a6f11b3b8 100644 (file)
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -278,8 +278,9 @@ static void rockchip_spi_handle_err(struct spi_controller *ctlr,
         */
        spi_enable_chip(rs, false);
 
-       /* make sure all interrupts are masked */
+       /* make sure all interrupts are masked and status cleared */
        writel_relaxed(0, rs->regs + ROCKCHIP_SPI_IMR);
+       writel_relaxed(0xffffffff, rs->regs + ROCKCHIP_SPI_ICR);
 
        if (atomic_read(&rs->state) & TXDMA)
                dmaengine_terminate_async(ctlr->dma_tx);