diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0477-spi-bcm2835-enable-shared-interrupt-support.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0477-spi-bcm2835-enable-shared-interrupt-support.patch | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0477-spi-bcm2835-enable-shared-interrupt-support.patch b/target/linux/brcm2708/patches-4.19/950-0477-spi-bcm2835-enable-shared-interrupt-support.patch new file mode 100644 index 0000000000..f929b3a969 --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0477-spi-bcm2835-enable-shared-interrupt-support.patch @@ -0,0 +1,35 @@ +From 21dd7cd6dc231287b92a8c8b9ecf9d0844c2d325 Mon Sep 17 00:00:00 2001 +From: Martin Sperl <kernel@martin.sperl.org> +Date: Mon, 13 May 2019 11:05:27 +0000 +Subject: [PATCH] spi: bcm2835: enable shared interrupt support + +Add shared interrupt support for this driver. + +Signed-off-by: Martin Sperl <kernel@martin.sperl.org> +--- + drivers/spi/spi-bcm2835.c | 7 ++++++- + 1 file changed, 6 insertions(+), 1 deletion(-) + +--- a/drivers/spi/spi-bcm2835.c ++++ b/drivers/spi/spi-bcm2835.c +@@ -150,6 +150,10 @@ static irqreturn_t bcm2835_spi_interrupt + struct spi_master *master = dev_id; + struct bcm2835_spi *bs = spi_master_get_devdata(master); + ++ /* 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 */ +@@ -756,7 +760,8 @@ static int bcm2835_spi_probe(struct plat + 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), master); + if (err) { + dev_err(&pdev->dev, "could not request IRQ: %d\n", err); |