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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Martin Sperl The new BCM2838 share one interrupt for multiple instances of the BCM2835 SPI controller. So this enables shared interrupt support for them. Signed-off-by: Martin Sperl Signed-off-by: Stefan Wahren --- drivers/spi/spi-bcm2835.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-bcm2835.c b/drivers/spi/spi-bcm2835.c index 6f243a9..50969ae 100644 --- a/drivers/spi/spi-bcm2835.c +++ b/drivers/spi/spi-bcm2835.c @@ -346,6 +346,10 @@ 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 */ @@ -1028,8 +1032,8 @@ 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, - dev_name(&pdev->dev), ctlr); + 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); goto out_clk_disable; -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel