lkml.org 
[lkml]   [2021]   [May]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[irqchip: irq/irqchip-next] ARM: PXA: Fix cplds irqdesc allocation when using legacy mode
The following commit has been merged into the irq/irqchip-next branch of irqchip:

Commit-ID: be1c2bb3ba5a39c20b1d54e01ffbcb2b1ca7e46c
Gitweb: https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms/be1c2bb3ba5a39c20b1d54e01ffbcb2b1ca7e46c
Author: Marc Zyngier <maz@kernel.org>
AuthorDate: Tue, 27 Apr 2021 09:00:28 +01:00
Committer: Marc Zyngier <maz@kernel.org>
CommitterDate: Mon, 10 May 2021 14:12:25 +01:00

ARM: PXA: Fix cplds irqdesc allocation when using legacy mode

The Mainstone PXA platform uses CONFIG_SPARSE_IRQ, and thus we
cannot rely on the irq descriptors to be readilly allocated
before creating the irqdomain in legacy mode. The kernel then
complains loudly about not being able to associate the interrupt
in the domain -- can't blame it.

Fix it by allocating the irqdescs upfront in the legacy case.

Fixes: b68761da0111 ("ARM: PXA: Kill use of irq_create_strict_mappings()")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210426223942.GA213931@roeck-us.net
---
arch/arm/mach-pxa/pxa_cplds_irqs.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-pxa/pxa_cplds_irqs.c b/arch/arm/mach-pxa/pxa_cplds_irqs.c
index ec0d9b0..bddfc7c 100644
--- a/arch/arm/mach-pxa/pxa_cplds_irqs.c
+++ b/arch/arm/mach-pxa/pxa_cplds_irqs.c
@@ -121,8 +121,13 @@ static int cplds_probe(struct platform_device *pdev)
return fpga->irq;

base_irq = platform_get_irq(pdev, 1);
- if (base_irq < 0)
+ if (base_irq < 0) {
base_irq = 0;
+ } else {
+ ret = devm_irq_alloc_descs(&pdev->dev, base_irq, base_irq, CPLDS_NB_IRQ, 0);
+ if (ret < 0)
+ return ret;
+ }

res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
fpga->base = devm_ioremap_resource(&pdev->dev, res);
\
 
 \ /
  Last update: 2021-05-10 15:31    [W:0.795 / U:0.552 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site