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authorLad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>2021-12-24 15:37:53 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-12-30 13:50:05 +0100
commit5acb78dc72b48bc44226a86368fb442800981a0c (patch)
tree005322e5411a568dbcf72f1d9ec646b964c8fb4c /drivers/tty
parentd8e9a406a931f687945703a4bac45042eb81ce92 (diff)
tty: goldfish: 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/20211224153753.22210-1-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/goldfish.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/tty/goldfish.c b/drivers/tty/goldfish.c
index c01cd36dda41..5ed19a9857ad 100644
--- a/drivers/tty/goldfish.c
+++ b/drivers/tty/goldfish.c
@@ -298,7 +298,7 @@ static int goldfish_tty_probe(struct platform_device *pdev)
struct resource *r;
struct device *ttydev;
void __iomem *base;
- u32 irq;
+ int irq;
unsigned int line;
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -313,14 +313,12 @@ static int goldfish_tty_probe(struct platform_device *pdev)
return -ENOMEM;
}
- r = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- if (!r) {
- pr_err("goldfish_tty: No IRQ resource available!\n");
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ ret = irq;
goto err_unmap;
}
- irq = r->start;
-
mutex_lock(&goldfish_tty_lock);
if (pdev->id == PLATFORM_DEVID_NONE)