diff options
| -rw-r--r-- | drivers/spi/pxa2xx_spi.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/spi/pxa2xx_spi.c b/drivers/spi/pxa2xx_spi.c index 4e169b579ef..1865c23f217 100644 --- a/drivers/spi/pxa2xx_spi.c +++ b/drivers/spi/pxa2xx_spi.c @@ -742,6 +742,18 @@ static irqreturn_t ssp_int(int irq, void *dev_id) { struct driver_data *drv_data = dev_id; void __iomem *reg = drv_data->ioaddr; + u32 sccr1_reg = read_SSCR1(reg); + u32 mask = drv_data->mask_sr; + u32 status; + + status = read_SSSR(reg); + + /* Ignore possible writes if we don't need to write */ + if (!(sccr1_reg & SSCR1_TIE)) + mask &= ~SSSR_TFS; + + if (!(status & mask)) + return IRQ_NONE; if (!drv_data->cur_msg) { @@ -1512,7 +1524,8 @@ static int __devinit pxa2xx_spi_probe(struct platform_device *pdev) drv_data->mask_sr = SSSR_TINT | SSSR_RFS | SSSR_TFS | SSSR_ROR; } - status = request_irq(ssp->irq, ssp_int, 0, dev_name(dev), drv_data); + status = request_irq(ssp->irq, ssp_int, IRQF_SHARED, dev_name(dev), + drv_data); if (status < 0) { dev_err(&pdev->dev, "cannot get IRQ %d\n", ssp->irq); goto out_error_master_alloc; |