From 91a80fff3eeed928b6fba21271f6a9719b22a5d8 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 13 Feb 2024 10:12:05 +0000 Subject: [PATCH] irqchip/gic-v3-its: Restore quirk probing for ACPI-based systems 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 Signed-off-by: Thomas Gleixner Reviewed-by: Lorenzo Pieralisi Reviewed-by: Zenghui Yu Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20240213101206.2137483-3-maz@kernel.org Signed-off-by: Greg Kroah-Hartman --- 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 bdc2c8330479..39f2e7f85d70 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);