This is a note to let you know that I've just added the patch titled
irqchip/gic-v3-its: Restore quirk probing for ACPI-based systems
to the 6.6-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:
irqchip-gic-v3-its-restore-quirk-probing-for-acpi-based-systems.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8b02da04ad978827e5ccd675acf170198f747a7a Mon Sep 17 00:00:00 2001
From: Marc Zyngier <maz@xxxxxxxxxx>
Date: Tue, 13 Feb 2024 10:12:05 +0000
Subject: irqchip/gic-v3-its: Restore quirk probing for ACPI-based systems
From: Marc Zyngier <maz@xxxxxxxxxx>
commit 8b02da04ad978827e5ccd675acf170198f747a7a upstream.
While refactoring the way the ITSs are probed, the handling of quirks
applicable to ACPI-based platforms was lost. As a result, systems such as
HIP07 lose their GICv4 functionnality, and some other may even fail to
boot, unless they are configured to boot with DT.
Move the enabling of quirks into its_probe_one(), making it common to all
firmware implementations.
Fixes: 9585a495ac93 ("irqchip/gic-v3-its: Split allocation from initialisation of its_node")
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Reviewed-by: Lorenzo Pieralisi <lpieralisi@xxxxxxxxxx>
Reviewed-by: Zenghui Yu <yuzenghui@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20240213101206.2137483-3-maz@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/irqchip/irq-gic-v3-its.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index fec1b58470df..250b4562f308 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -5091,6 +5091,8 @@ static int __init its_probe_one(struct its_node *its)
u32 ctlr;
int err;
+ its_enable_quirks(its);
+
if (is_v4(its)) {
if (!(its->typer & GITS_TYPER_VMOVP)) {
err = its_compute_its_list_map(its);
@@ -5442,7 +5444,6 @@ static int __init its_of_probe(struct device_node *node)
if (!its)
return -ENOMEM;
- its_enable_quirks(its);
err = its_probe_one(its);
if (err) {
its_node_destroy(its);
--
2.43.2
Patches currently in stable-queue which might be from maz@xxxxxxxxxx are
queue-6.6/irqchip-gic-v3-its-restore-quirk-probing-for-acpi-based-systems.patch
queue-6.6/irqchip-irq-brcmstb-l2-add-write-memory-barrier-before-exit.patch
queue-6.6/irqchip-gic-v3-its-handle-non-coherent-gicv4-redistr.patch
queue-6.6/arm64-subscribe-microsoft-azure-cobalt-100-to-arm-neoverse-n2-errata.patch
queue-6.6/irqchip-gic-v3-its-fix-gicv4.1-vpe-affinity-update.patch
queue-6.6/kvm-arm64-fix-circular-locking-dependency.patch
