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authorLad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>2021-12-24 14:29:16 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-12-30 13:26:49 +0100
commite3b27e2f56a5337d2ecdbe3feddc7c75e2205d59 (patch)
treeae2b4fea76da6258ae2ae5dadce2dd97722546ef /drivers/tty
parentfc67c913298c97bf5c1aac419ff260b7845613f5 (diff)
serial: pmac_zilog: 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(). Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20211224142917.6966-11-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/pmac_zilog.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/tty/serial/pmac_zilog.c b/drivers/tty/serial/pmac_zilog.c
index 12ce150b0ad4..5359236b32d6 100644
--- a/drivers/tty/serial/pmac_zilog.c
+++ b/drivers/tty/serial/pmac_zilog.c
@@ -1702,17 +1702,21 @@ extern struct platform_device scc_a_pdev, scc_b_pdev;
static int __init pmz_init_port(struct uart_pmac_port *uap)
{
- struct resource *r_ports, *r_irq;
+ struct resource *r_ports;
+ int irq;
r_ports = platform_get_resource(uap->pdev, IORESOURCE_MEM, 0);
- r_irq = platform_get_resource(uap->pdev, IORESOURCE_IRQ, 0);
- if (!r_ports || !r_irq)
+ if (!r_ports)
return -ENODEV;
+ irq = platform_get_irq(uap->pdev, 0);
+ if (irq < 0)
+ return irq;
+
uap->port.mapbase = r_ports->start;
uap->port.membase = (unsigned char __iomem *) r_ports->start;
uap->port.iotype = UPIO_MEM;
- uap->port.irq = r_irq->start;
+ uap->port.irq = irq;
uap->port.uartclk = ZS_CLOCK;
uap->port.fifosize = 1;
uap->port.ops = &pmz_pops;