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 <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>

diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index bdc2c8330479326558e46fdbdd06a96280994343..39f2e7f85d70020a37a21eb1c9127ac7be5e1214 100644 (file)
--- 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);