diff options
Diffstat (limited to 'drivers/spi/spi-lantiq-ssc.c')
| -rw-r--r-- | drivers/spi/spi-lantiq-ssc.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/spi/spi-lantiq-ssc.c b/drivers/spi/spi-lantiq-ssc.c index 24585890996b..2ffe30354c13 100644 --- a/drivers/spi/spi-lantiq-ssc.c +++ b/drivers/spi/spi-lantiq-ssc.c @@ -622,7 +622,9 @@ static void rx_request(struct lantiq_ssc_spi *spi) static irqreturn_t lantiq_ssc_xmit_interrupt(int irq, void *data) { struct lantiq_ssc_spi *spi = data; + unsigned long flags; + spin_lock_irqsave(&spi->lock, flags); if (spi->tx) { if (spi->rx && spi->rx_todo) rx_fifo_read_full_duplex(spi); @@ -644,10 +646,12 @@ static irqreturn_t lantiq_ssc_xmit_interrupt(int irq, void *data) } } + spin_unlock_irqrestore(&spi->lock, flags); return IRQ_HANDLED; completed: queue_work(spi->wq, &spi->work); + spin_unlock_irqrestore(&spi->lock, flags); return IRQ_HANDLED; } @@ -656,10 +660,12 @@ static irqreturn_t lantiq_ssc_err_interrupt(int irq, void *data) { struct lantiq_ssc_spi *spi = data; u32 stat = lantiq_ssc_readl(spi, LTQ_SPI_STAT); + unsigned long flags; if (!(stat & LTQ_SPI_STAT_ERRORS)) return IRQ_NONE; + spin_lock_irqsave(&spi->lock, flags); if (stat & LTQ_SPI_STAT_RUE) dev_err(spi->dev, "receive underflow error\n"); if (stat & LTQ_SPI_STAT_TUE) @@ -680,6 +686,7 @@ static irqreturn_t lantiq_ssc_err_interrupt(int irq, void *data) if (spi->master->cur_msg) spi->master->cur_msg->status = -EIO; queue_work(spi->wq, &spi->work); + spin_unlock_irqrestore(&spi->lock, flags); return IRQ_HANDLED; } |