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authorLad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>2021-12-24 14:29:08 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-12-30 13:26:48 +0100
commit56c8b1c10e95f9a56952a15b0a1656e04b98208d (patch)
tree295d4e248b6b64b5acc271877014c4eced981d74 /drivers/tty
parent257538544d42987e740491838519ceee5e97d04e (diff)
serial: 8250_bcm7271: Use platform_get_irq() to get the interrupt
platform_get_resource(pdev, IORESOURCE_IRQ, ..) relies on static allocation of IRQ resources in DT core code, this causes an issue when using hierarchical interrupt domains using "interrupts" property in the node as this bypasses the hierarchical setup and messes up the irq chaining. In preparation for removal of static setup of IRQ resource from DT core code use platform_get_irq(). Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20211224142917.6966-3-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/8250/8250_bcm7271.c12
1 files changed, 5 insertions, 7 deletions
diff --git a/drivers/tty/serial/8250/8250_bcm7271.c b/drivers/tty/serial/8250/8250_bcm7271.c
index 5163d60756b7..7ecfcc650d28 100644
--- a/drivers/tty/serial/8250/8250_bcm7271.c
+++ b/drivers/tty/serial/8250/8250_bcm7271.c
@@ -941,7 +941,7 @@ static int brcmuart_probe(struct platform_device *pdev)
struct brcmuart_priv *priv;
struct clk *baud_mux_clk;
struct uart_8250_port up;
- struct resource *irq;
+ int irq;
void __iomem *membase = NULL;
resource_size_t mapbase = 0;
u32 clk_rate = 0;
@@ -952,11 +952,9 @@ static int brcmuart_probe(struct platform_device *pdev)
"uart", "dma_rx", "dma_tx", "dma_intr2", "dma_arb"
};
- irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- if (!irq) {
- dev_err(dev, "missing irq\n");
- return -EINVAL;
- }
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
priv = devm_kzalloc(dev, sizeof(struct brcmuart_priv),
GFP_KERNEL);
if (!priv)
@@ -1044,7 +1042,7 @@ static int brcmuart_probe(struct platform_device *pdev)
up.port.dev = dev;
up.port.mapbase = mapbase;
up.port.membase = membase;
- up.port.irq = irq->start;
+ up.port.irq = irq;
up.port.handle_irq = brcmuart_handle_irq;
up.port.regshift = 2;
up.port.iotype = of_device_is_big_endian(np) ?