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irqchip/gic-v3-its: Restore quirk probing for ACPI-based systems

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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: 9585a495ac ("irqchip/gic-v3-its: Split allocation from initialisation of its_node")
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Zenghui Yu <yuzenghui@huawei.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240213101206.2137483-3-maz@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Marc Zyngier
2024-02-13 10:12:05 +00:00
committed by Greg Kroah-Hartman
parent 5fcc75e44d
commit 91a80fff3e
1 changed files with 2 additions and 1 deletions
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3
drivers/irqchip/irq-gic-v3-its.c
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@@ -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);