This is a note to let you know that I've just added the patch titled
ACPI: irq: Fix incorrect return value in acpi_register_gsi()
to the 5.4-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:
acpi-irq-fix-incorrect-return-value-in-acpi_register_gsi.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0c21a18d5d6c6a73d098fb9b4701572370942df9 Mon Sep 17 00:00:00 2001
From: Sunil V L <sunilvl@xxxxxxxxxxxxxxxx>
Date: Mon, 16 Oct 2023 22:39:39 +0530
Subject: ACPI: irq: Fix incorrect return value in acpi_register_gsi()
From: Sunil V L <sunilvl@xxxxxxxxxxxxxxxx>
commit 0c21a18d5d6c6a73d098fb9b4701572370942df9 upstream.
acpi_register_gsi() should return a negative value in case of failure.
Currently, it returns the return value from irq_create_fwspec_mapping().
However, irq_create_fwspec_mapping() returns 0 for failure. Fix the
issue by returning -EINVAL if irq_create_fwspec_mapping() returns zero.
Fixes: d44fa3d46079 ("ACPI: Add support for ResourceSource/IRQ domain mapping")
Cc: 4.11+ <stable@xxxxxxxxxxxxxxx> # 4.11+
Signed-off-by: Sunil V L <sunilvl@xxxxxxxxxxxxxxxx>
[ rjw: Rename a new local variable ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/acpi/irq.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
--- a/drivers/acpi/irq.c
+++ b/drivers/acpi/irq.c
@@ -52,6 +52,7 @@ int acpi_register_gsi(struct device *dev
int polarity)
{
struct irq_fwspec fwspec;
+ unsigned int irq;
if (WARN_ON(!acpi_gsi_domain_id)) {
pr_warn("GSI: No registered irqchip, giving up\n");
@@ -63,7 +64,11 @@ int acpi_register_gsi(struct device *dev
fwspec.param[1] = acpi_dev_get_irq_type(trigger, polarity);
fwspec.param_count = 2;
- return irq_create_fwspec_mapping(&fwspec);
+ irq = irq_create_fwspec_mapping(&fwspec);
+ if (!irq)
+ return -EINVAL;
+
+ return irq;
}
EXPORT_SYMBOL_GPL(acpi_register_gsi);
Patches currently in stable-queue which might be from sunilvl@xxxxxxxxxxxxxxxx are
queue-5.4/acpi-irq-fix-incorrect-return-value-in-acpi_register_gsi.patch
