This is a note to let you know that I've just added the patch titled
irqdomain: Drop bogus fwspec-mapping error handling
to the 6.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
irqdomain-drop-bogus-fwspec-mapping-error-handling.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From e3b7ab025e931accdc2c12acf9b75c6197f1c062 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan+linaro@xxxxxxxxxx>
Date: Mon, 13 Feb 2023 11:42:45 +0100
Subject: irqdomain: Drop bogus fwspec-mapping error handling
From: Johan Hovold <johan+linaro@xxxxxxxxxx>
commit e3b7ab025e931accdc2c12acf9b75c6197f1c062 upstream.
In case a newly allocated IRQ ever ends up not having any associated
struct irq_data it would not even be possible to dispose the mapping.
Replace the bogus disposal with a WARN_ON().
This will also be used to fix a shared-interrupt mapping race, hence the
CC-stable tag.
Fixes: 1e2a7d78499e ("irqdomain: Don't set type when mapping an IRQ")
Cc: stable@xxxxxxxxxxxxxxx # 4.8
Tested-by: Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx>
Tested-by: Mark-PK Tsai <mark-pk.tsai@xxxxxxxxxxxx>
Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230213104302.17307-4-johan+linaro@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
kernel/irq/irqdomain.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -853,13 +853,8 @@ unsigned int irq_create_fwspec_mapping(s
}
irq_data = irq_get_irq_data(virq);
- if (!irq_data) {
- if (irq_domain_is_hierarchy(domain))
- irq_domain_free_irqs(virq, 1);
- else
- irq_dispose_mapping(virq);
+ if (WARN_ON(!irq_data))
return 0;
- }
/* Store trigger type */
irqd_set_trigger_type(irq_data, type);
Patches currently in stable-queue which might be from johan+linaro@xxxxxxxxxx are
queue-6.2/rtc-pm8xxx-fix-set-alarm-race.patch
queue-6.2/irqdomain-fix-association-race.patch
queue-6.2/pci-qcom-fix-host-init-error-handling.patch
queue-6.2/irqdomain-fix-domain-registration-race.patch
queue-6.2/irqdomain-drop-bogus-fwspec-mapping-error-handling.patch
queue-6.2/irqdomain-fix-mapping-creation-race.patch
queue-6.2/drm-panel-edp-fix-name-for-ivo-product-id-854b.patch
queue-6.2/irqdomain-refactor-__irq_domain_alloc_irqs.patch
queue-6.2/irqdomain-fix-disassociation-race.patch
queue-6.2/irqdomain-look-for-existing-mapping-only-once.patch
queue-6.2/arm64-dts-qcom-sc8280xp-correct-spmi-bus-address-cel.patch
