Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-09-28 19:03:08 +00:00
Code Issues Packages Projects Releases Wiki Activity

serial: altera_jtaguart: Use platform_get_irq_optional() to get the interrupt

Browse Source 
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_optional().

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20211224142917.6966-7-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 14:29:12 +00:00 committed by Greg Kroah-Hartman
parent 6050efac12
commit 60302276ca
1 changed files with 7 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/tty/serial/altera_jtaguart.c
View File

@ -418,8 +418,9 @@ static int altera_jtaguart_probe(struct platform_device *pdev)
struct altera_jtaguart_platform_uart *platp =
dev_get_platdata(&pdev->dev);
struct uart_port *port;
struct resource *res_irq, *res_mem;
struct resource *res_mem;
int i = pdev->id;
int irq;
/* -1 emphasizes that the platform must have one port, no .N suffix */
if (i == -1)
@ -438,9 +439,11 @@ static int altera_jtaguart_probe(struct platform_device *pdev)
else
return -ENODEV;
res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (res_irq)
port->irq = res_irq->start;
irq = platform_get_irq_optional(pdev, 0);
if (irq < 0 && irq != -ENXIO)
return irq;
if (irq > 0)
port->irq = irq;
else if (platp)
port->irq = platp->irq;
else