irqchip/irq-mvebu-icu: Fix access to msi_data from irq_domain::host_data

mvebu_icu_translate() incorrectly casts irq_domain::host_data directly to
mvebu_icu_msi_data. However, host_data actually points to a structure of
type msi_domain_info.

This incorrect cast causes issues such as the thermal sensors of the
CP110 platform malfunctioning. Specifically, the translation of the SEI
interrupt to IRQ_TYPE_EDGE_RISING fails, preventing proper interrupt
handling. The following error was observed:

  genirq: Setting trigger mode 4 for irq 85 failed (irq_chip_set_type_parent+0x0/0x34)
  armada_thermal f2400000.system-controller:thermal-sensor@70: Cannot request threaded IRQ 85

Resolve the issue by first casting host_data to msi_domain_info and then
accessing mvebu_icu_msi_data through msi_domain_info::chip_data.

Fixes: d929e4db22b6 ("irqchip/irq-mvebu-icu: Prepare for real per device MSI")
Signed-off-by: Stefan Eichenberger <eichest@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/all/20250124085140.44792-1-eichest@gmail.com

diff --git a/drivers/irqchip/irq-mvebu-icu.c b/drivers/irqchip/irq-mvebu-icu.c
index b337f6c05f184fd051c8ccf89e8e5327874024a9..4eebed39880a5b82330958f8eeaad55ff5dd43f6 100644 (file)
--- a/drivers/irqchip/irq-mvebu-icu.c
+++ b/drivers/irqchip/irq-mvebu-icu.c
@@ -68,7 +68,8 @@ static int mvebu_icu_translate(struct irq_domain *d, struct irq_fwspec *fwspec,
                               unsigned long *hwirq, unsigned int *type)
 {
        unsigned int param_count = static_branch_unlikely(&legacy_bindings) ? 3 : 2;
-       struct mvebu_icu_msi_data *msi_data = d->host_data;
+       struct msi_domain_info *info = d->host_data;
+       struct mvebu_icu_msi_data *msi_data = info->chip_data;
        struct mvebu_icu *icu = msi_data->icu;
 
        /* Check the count of the parameters in dt */