Merge tag 'irq-urgent-2024-08-04' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq fixes from Thomas Gleixner:
"A couple of fixes for interrupt chip drivers:

- Make sure to skip the clear register space in the MBIGEN driver
when calculating the node register index. Otherwise the clear
register is clobbered and the wrong node registers are accessed.

- Fix a signed/unsigned confusion in the loongarch CPU driver which
converts an error code to a huge "valid" interrupt number.

- Convert the mesion GPIO interrupt controller lock to a raw spinlock
so it works on RT.

- Add a missing static to a internal function in the pic32 EVIC
driver"

* tag 'irq-urgent-2024-08-04' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/mbigen: Fix mbigen node address layout
irqchip/meson-gpio: Convert meson_gpio_irq_controller::lock to 'raw_spinlock_t'
irqchip/irq-pic32-evic: Add missing 'static' to internal function
irqchip/loongarch-cpu: Fix return value of lpic_gsi_to_irq()

drivers/irqchip/irq-loongarch-cpu.c

···
 
 static u32 lpic_gsi_to_irq(u32 gsi)
 {
+	int irq = 0;
+
 	/* Only pch irqdomain transferring is required for LoongArch. */
 	if (gsi >= GSI_MIN_PCH_IRQ && gsi <= GSI_MAX_PCH_IRQ)
-		return acpi_register_gsi(NULL, gsi, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_HIGH);
+		irq = acpi_register_gsi(NULL, gsi, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_HIGH);
 
-	return 0;
+	return (irq > 0) ? irq : 0;
 }
 
 static struct fwnode_handle *lpic_get_gsi_domain_id(u32 gsi)

drivers/irqchip/irq-mbigen.c

···
 	void __iomem		*base;
 };
 
+static inline unsigned int get_mbigen_node_offset(unsigned int nid)
+{
+	unsigned int offset = nid * MBIGEN_NODE_OFFSET;
+
+	/*
+	 * To avoid touched clear register in unexpected way, we need to directly
+	 * skip clear register when access to more than 10 mbigen nodes.
+	 */
+	if (nid >= (REG_MBIGEN_CLEAR_OFFSET / MBIGEN_NODE_OFFSET))
+		offset += MBIGEN_NODE_OFFSET;
+
+	return offset;
+}
+
 static inline unsigned int get_mbigen_vec_reg(irq_hw_number_t hwirq)
 {
 	unsigned int nid, pin;
···
 	nid = hwirq / IRQS_PER_MBIGEN_NODE + 1;
 	pin = hwirq % IRQS_PER_MBIGEN_NODE;
 
-	return pin * 4 + nid * MBIGEN_NODE_OFFSET
-			+ REG_MBIGEN_VEC_OFFSET;
+	return pin * 4 + get_mbigen_node_offset(nid) + REG_MBIGEN_VEC_OFFSET;
 }
 
 static inline void get_mbigen_type_reg(irq_hw_number_t hwirq,
···
 	*mask = 1 << (irq_ofst % 32);
 	ofst = irq_ofst / 32 * 4;
 
-	*addr = ofst + nid * MBIGEN_NODE_OFFSET
-		+ REG_MBIGEN_TYPE_OFFSET;
+	*addr = ofst + get_mbigen_node_offset(nid) + REG_MBIGEN_TYPE_OFFSET;
 }
 
 static inline void get_mbigen_clear_reg(irq_hw_number_t hwirq,

drivers/irqchip/irq-meson-gpio.c

···
 	void __iomem *base;
 	u32 channel_irqs[MAX_NUM_CHANNEL];
 	DECLARE_BITMAP(channel_map, MAX_NUM_CHANNEL);
-	spinlock_t lock;
+	raw_spinlock_t lock;
 };
 
 static void meson_gpio_irq_update_bits(struct meson_gpio_irq_controller *ctl,
···
 	unsigned long flags;
 	u32 tmp;
 
-	spin_lock_irqsave(&ctl->lock, flags);
+	raw_spin_lock_irqsave(&ctl->lock, flags);
 
 	tmp = readl_relaxed(ctl->base + reg);
 	tmp &= ~mask;
 	tmp |= val;
 	writel_relaxed(tmp, ctl->base + reg);
 
-	spin_unlock_irqrestore(&ctl->lock, flags);
+	raw_spin_unlock_irqrestore(&ctl->lock, flags);
 }
 
 static void meson_gpio_irq_init_dummy(struct meson_gpio_irq_controller *ctl)
···
 	unsigned long flags;
 	unsigned int idx;
 
-	spin_lock_irqsave(&ctl->lock, flags);
+	raw_spin_lock_irqsave(&ctl->lock, flags);
 
 	/* Find a free channel */
 	idx = find_first_zero_bit(ctl->channel_map, ctl->params->nr_channels);
 	if (idx >= ctl->params->nr_channels) {
-		spin_unlock_irqrestore(&ctl->lock, flags);
+		raw_spin_unlock_irqrestore(&ctl->lock, flags);
 		pr_err("No channel available\n");
 		return -ENOSPC;
 	}
···
 	/* Mark the channel as used */
 	set_bit(idx, ctl->channel_map);
 
-	spin_unlock_irqrestore(&ctl->lock, flags);
+	raw_spin_unlock_irqrestore(&ctl->lock, flags);
 
 	/*
 	 * Setup the mux of the channel to route the signal of the pad
···
 	if (!ctl)
 		return -ENOMEM;
 
-	spin_lock_init(&ctl->lock);
+	raw_spin_lock_init(&ctl->lock);
 
 	ctl->base = of_iomap(node, 0);
 	if (!ctl->base) {

drivers/irqchip/irq-pic32-evic.c

···
 	return ret;
 }
 
-int pic32_irq_domain_xlate(struct irq_domain *d, struct device_node *ctrlr,
-			   const u32 *intspec, unsigned int intsize,
-			   irq_hw_number_t *out_hwirq, unsigned int *out_type)
+static int pic32_irq_domain_xlate(struct irq_domain *d, struct device_node *ctrlr,
+				  const u32 *intspec, unsigned int intsize,
+				  irq_hw_number_t *out_hwirq, unsigned int *out_type)
 {
 	struct evic_chip_data *priv = d->host_data;