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serial: 8250_bcm7271: Use platform_get_irq() to get the interrupt

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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>
This commit is contained in:
Lad Prabhakar 2021-12-24 14:29:08 +00:00 committed by Greg Kroah-Hartman
parent 257538544d
commit 56c8b1c10e
1 changed files with 5 additions and 7 deletions
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12
drivers/tty/serial/8250/8250_bcm7271.c
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@ -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) ?