On Thu, Dec 02, 2010 at 06:47:30PM +0100, Sebastian Andrzej Siewior wrote:
> This is required in case the interrupt line is shared with other
> devices.
>
> Signed-off-by: Sebastian Andrzej Siewior <[email protected]>
> Signed-off-by: Dirk Brandewie <[email protected]>
picked up for -next via merge
g.
> ---
> 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 4e169b5..1865c23 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;
> --
> 1.7.3.2
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> [email protected]
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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