spi/bfin_spi: use dma_disable_irq_nosync() in irq handler

Using disable_irq() on the IRQ whose handler we are currently executing in
can easily lead to a hang.  So use the nosync variant here.

Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c
index b3450b7..18b313a 100644 (file)
--- a/drivers/spi/spi_bfin5xx.c
+++ b/drivers/spi/spi_bfin5xx.c
@@ -547,7 +547,7 @@ static irqreturn_t bfin_spi_dma_irq_handler(int irq, void *dev_id)
        dev_dbg(&drv_data->pdev->dev,
                "disable dma channel irq%d\n",
                drv_data->dma_channel);
-       dma_disable_irq(drv_data->dma_channel);
+       dma_disable_irq_nosync(drv_data->dma_channel);
 
        return IRQ_HANDLED;
 }