diff options
Diffstat (limited to 'drivers/spi/spi-bcm2835.c')
| -rw-r--r-- | drivers/spi/spi-bcm2835.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/spi/spi-bcm2835.c b/drivers/spi/spi-bcm2835.c index 237bd306c268..0ac5dd39a805 100644 --- a/drivers/spi/spi-bcm2835.c +++ b/drivers/spi/spi-bcm2835.c @@ -379,6 +379,10 @@ static irqreturn_t bcm2835_spi_interrupt(int irq, void *dev_id) if (bs->tx_len && cs & BCM2835_SPI_CS_DONE) bcm2835_wr_fifo_blind(bs, BCM2835_SPI_FIFO_SIZE); + /* check if we got interrupt enabled */ + if (!(bcm2835_rd(bs, BCM2835_SPI_CS) & BCM2835_SPI_CS_INTR)) + return IRQ_NONE; + /* Read as many bytes as possible from FIFO */ bcm2835_rd_fifo(bs); /* Write as many bytes as possible to FIFO */ @@ -1344,7 +1348,8 @@ static int bcm2835_spi_probe(struct platform_device *pdev) bcm2835_wr(bs, BCM2835_SPI_CS, BCM2835_SPI_CS_CLEAR_RX | BCM2835_SPI_CS_CLEAR_TX); - err = devm_request_irq(&pdev->dev, bs->irq, bcm2835_spi_interrupt, 0, + err = devm_request_irq(&pdev->dev, bs->irq, bcm2835_spi_interrupt, + IRQF_SHARED, dev_name(&pdev->dev), ctlr); if (err) { dev_err(&pdev->dev, "could not request IRQ: %d\n", err); |