From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
To: linux-serial@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jirislaby@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>,
linux-kernel@vger.kernel.org,
Prabhakar <prabhakar.csengg@gmail.com>,
Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Subject: [PATCH 08/10] serial: ar933x: Use platform_get_irq() to get the interrupt
Date: Fri, 24 Dec 2021 14:29:14 +0000 [thread overview]
Message-ID: <20211224142917.6966-9-prabhakar.mahadev-lad.rj@bp.renesas.com> (raw)
In-Reply-To: <20211224142917.6966-1-prabhakar.mahadev-lad.rj@bp.renesas.com>
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>
---
drivers/tty/serial/ar933x_uart.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
diff --git a/drivers/tty/serial/ar933x_uart.c b/drivers/tty/serial/ar933x_uart.c
index 4379ca4842ae..8cabe50c4a33 100644
--- a/drivers/tty/serial/ar933x_uart.c
+++ b/drivers/tty/serial/ar933x_uart.c
@@ -707,11 +707,11 @@ static int ar933x_uart_probe(struct platform_device *pdev)
struct ar933x_uart_port *up;
struct uart_port *port;
struct resource *mem_res;
- struct resource *irq_res;
struct device_node *np;
unsigned int baud;
int id;
int ret;
+ int irq;
np = pdev->dev.of_node;
if (IS_ENABLED(CONFIG_OF) && np) {
@@ -730,11 +730,9 @@ static int ar933x_uart_probe(struct platform_device *pdev)
if (id >= CONFIG_SERIAL_AR933X_NR_UARTS)
return -EINVAL;
- irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- if (!irq_res) {
- dev_err(&pdev->dev, "no IRQ resource\n");
- return -EINVAL;
- }
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
up = devm_kzalloc(&pdev->dev, sizeof(struct ar933x_uart_port),
GFP_KERNEL);
@@ -766,7 +764,7 @@ static int ar933x_uart_probe(struct platform_device *pdev)
port->mapbase = mem_res->start;
port->line = id;
- port->irq = irq_res->start;
+ port->irq = irq;
port->dev = &pdev->dev;
port->type = PORT_AR933X;
port->iotype = UPIO_MEM32;
--
2.17.1
next prev parent reply other threads:[~2021-12-24 14:30 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-24 14:29 [PATCH 00/10] serial: Use platform_get_irq*() variants to fetch IRQ's Lad Prabhakar
2021-12-24 14:29 ` [PATCH 01/10] serial: altera: Use platform_get_irq_optional() to get the interrupt Lad Prabhakar
2021-12-24 14:29 ` [PATCH 02/10] serial: 8250_bcm7271: Use platform_get_irq() " Lad Prabhakar
2021-12-24 22:10 ` Florian Fainelli
2021-12-24 14:29 ` [PATCH 03/10] serial: 8250_bcm7271: Propagate error codes from brcmuart_probe() Lad Prabhakar
2021-12-24 22:11 ` Florian Fainelli
[not found] ` <CAHp75VdC+JifneoYRS3yoXoAhio+TXQzca3pku7ug=A_ewWrsg@mail.gmail.com>
2021-12-25 12:20 ` Lad, Prabhakar
2021-12-30 12:27 ` Greg Kroah-Hartman
2021-12-24 14:29 ` [PATCH 04/10] serial: meson: Use platform_get_irq() to get the interrupt Lad Prabhakar
2021-12-24 14:29 ` Lad Prabhakar
2021-12-24 14:29 ` Lad Prabhakar
2021-12-24 14:29 ` [PATCH 05/10] serial: pxa: " Lad Prabhakar
2021-12-24 14:29 ` [PATCH 06/10] serial: altera_jtaguart: Use platform_get_irq_optional() " Lad Prabhakar
2021-12-24 14:29 ` [PATCH 07/10] serial: vt8500: Use platform_get_irq() " Lad Prabhakar
2021-12-24 14:29 ` Lad Prabhakar
2021-12-24 14:29 ` Lad Prabhakar [this message]
2021-12-24 14:29 ` [PATCH 09/10] serial: bcm63xx: " Lad Prabhakar
2021-12-24 14:29 ` Lad Prabhakar
2021-12-24 17:05 ` Florian Fainelli
2021-12-24 17:05 ` Florian Fainelli
2021-12-24 14:29 ` [PATCH 10/10] serial: pmac_zilog: " Lad Prabhakar
2021-12-24 14:29 ` Lad Prabhakar
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