Merge tag 'irqchip-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core

Pull irqchip updates from Marc Zyngier:

- API updates:

  - Treewide conversion to generic_handle_domain_irq() for anything
    that looks like a chained interrupt controller

  - Update the irqdomain documentation

  - Use of bitmap_zalloc() throughout the tree

- New functionalities:

  - Support for GICv3 EPPI partitions

- Fixes:

  - Qualcomm PDC hierarchy fixes

  - Yet another priority decoding fix for the GICv3 pseudo-NMIs

  - Fix the apple-aic driver irq_eoi() callback to always unmask
    the interrupt

  - Properly handle edge interrupts on loongson-pch-pic

  - Let the mtk-sysirq driver advertise IRQCHIP_SKIP_SET_WAKE

Link: https://lore.kernel.org/r/20210828121013.2647964-1-maz@kernel.org

8 files changed, 29 insertions, 39 deletions

diff --git a/arch/mips/ath25/ar2315.c b/arch/mips/ath25/ar2315.c
index 9dbed7b5ea76..76e43a73ba1b 100644
--- a/arch/mips/ath25/ar2315.c
+++ b/arch/mips/ath25/ar2315.c
@@ -69,24 +69,24 @@ static void ar2315_misc_irq_handler(struct irq_desc *desc)
 {
 	u32 pending = ar2315_rst_reg_read(AR2315_ISR) &
 		      ar2315_rst_reg_read(AR2315_IMR);
-	unsigned nr, misc_irq = 0;
+	unsigned nr;
+	int ret = 0;
 
 	if (pending) {
 		struct irq_domain *domain = irq_desc_get_handler_data(desc);
 
 		nr = __ffs(pending);
-		misc_irq = irq_find_mapping(domain, nr);
-	}
 
-	if (misc_irq) {
 		if (nr == AR2315_MISC_IRQ_GPIO)
 			ar2315_rst_reg_write(AR2315_ISR, AR2315_ISR_GPIO);
 		else if (nr == AR2315_MISC_IRQ_WATCHDOG)
 			ar2315_rst_reg_write(AR2315_ISR, AR2315_ISR_WD);
-		generic_handle_irq(misc_irq);
-	} else {
-		spurious_interrupt();
+
+		ret = generic_handle_domain_irq(domain, nr);
 	}
+
+	if (!pending || ret)
+		spurious_interrupt();
 }
 
 static void ar2315_misc_irq_unmask(struct irq_data *d)
diff --git a/arch/mips/ath25/ar5312.c b/arch/mips/ath25/ar5312.c
index 23c879f4b734..822b639dbd1e 100644
--- a/arch/mips/ath25/ar5312.c
+++ b/arch/mips/ath25/ar5312.c
@@ -73,22 +73,21 @@ static void ar5312_misc_irq_handler(struct irq_desc *desc)
 {
 	u32 pending = ar5312_rst_reg_read(AR5312_ISR) &
 		      ar5312_rst_reg_read(AR5312_IMR);
-	unsigned nr, misc_irq = 0;
+	unsigned nr;
+	int ret = 0;
 
 	if (pending) {
 		struct irq_domain *domain = irq_desc_get_handler_data(desc);
 
 		nr = __ffs(pending);
-		misc_irq = irq_find_mapping(domain, nr);
-	}
 
-	if (misc_irq) {
-		generic_handle_irq(misc_irq);
+		ret = generic_handle_domain_irq(domain, nr);
 		if (nr == AR5312_MISC_IRQ_TIMER)
 			ar5312_rst_reg_read(AR5312_TIMER);
-	} else {
-		spurious_interrupt();
 	}
+
+	if (!pending || ret)
+		spurious_interrupt();
 }
 
 /* Enable the specified AR5312_MISC_IRQ interrupt */
diff --git a/arch/mips/lantiq/irq.c b/arch/mips/lantiq/irq.c
index acfbdc01b0ac..b732495f138a 100644
--- a/arch/mips/lantiq/irq.c
+++ b/arch/mips/lantiq/irq.c
@@ -300,7 +300,7 @@ static void ltq_hw_irq_handler(struct irq_desc *desc)
 	 */
 	irq = __fls(irq);
 	hwirq = irq + MIPS_CPU_IRQ_CASCADE + (INT_NUM_IM_OFFSET * module);
-	generic_handle_irq(irq_linear_revmap(ltq_domain, hwirq));
+	generic_handle_domain_irq(ltq_domain, hwirq);
 
 	/* if this is a EBU irq, we need to ack it or get a deadlock */
 	if (irq == LTQ_ICU_EBU_IRQ && !module && LTQ_EBU_PCC_ISTAT != 0)
diff --git a/arch/mips/pci/pci-ar2315.c b/arch/mips/pci/pci-ar2315.c
index c1a655aee599..9a4bfb4e63e3 100644
--- a/arch/mips/pci/pci-ar2315.c
+++ b/arch/mips/pci/pci-ar2315.c
@@ -337,14 +337,12 @@ static void ar2315_pci_irq_handler(struct irq_desc *desc)
 	struct ar2315_pci_ctrl *apc = irq_desc_get_handler_data(desc);
 	u32 pending = ar2315_pci_reg_read(apc, AR2315_PCI_ISR) &
 		      ar2315_pci_reg_read(apc, AR2315_PCI_IMR);
-	unsigned pci_irq = 0;
+	int ret = 0;
 
 	if (pending)
-		pci_irq = irq_find_mapping(apc->domain, __ffs(pending));
+		ret = generic_handle_domain_irq(apc->domain, __ffs(pending));
 
-	if (pci_irq)
-		generic_handle_irq(pci_irq);
-	else
+	if (!pending || ret)
 		spurious_interrupt();
 }
 
diff --git a/arch/mips/pci/pci-rt3883.c b/arch/mips/pci/pci-rt3883.c
index c48e23cf5b5e..d3c947fa2969 100644
--- a/arch/mips/pci/pci-rt3883.c
+++ b/arch/mips/pci/pci-rt3883.c
@@ -140,10 +140,9 @@ static void rt3883_pci_irq_handler(struct irq_desc *desc)
 	}
 
 	while (pending) {
-		unsigned irq, bit = __ffs(pending);
+		unsigned bit = __ffs(pending);
 
-		irq = irq_find_mapping(rpc->irq_domain, bit);
-		generic_handle_irq(irq);
+		generic_handle_domain_irq(rpc->irq_domain, bit);
 
 		pending &= ~BIT(bit);
 	}
diff --git a/arch/mips/ralink/irq.c b/arch/mips/ralink/irq.c
index 220ca0cd7945..fa353bc13947 100644
--- a/arch/mips/ralink/irq.c
+++ b/arch/mips/ralink/irq.c
@@ -100,7 +100,7 @@ static void ralink_intc_irq_handler(struct irq_desc *desc)
 
 	if (pending) {
 		struct irq_domain *domain = irq_desc_get_handler_data(desc);
-		generic_handle_irq(irq_find_mapping(domain, __ffs(pending)));
+		generic_handle_domain_irq(domain, __ffs(pending));
 	} else {
 		spurious_interrupt();
 	}
diff --git a/arch/mips/sgi-ip27/ip27-irq.c b/arch/mips/sgi-ip27/ip27-irq.c
index 95c1bff1ab9f..a0dd3bd2b81b 100644
--- a/arch/mips/sgi-ip27/ip27-irq.c
+++ b/arch/mips/sgi-ip27/ip27-irq.c
@@ -190,7 +190,7 @@ static void ip27_do_irq_mask0(struct irq_desc *desc)
 	unsigned long *mask = per_cpu(irq_enable_mask, cpu);
 	struct irq_domain *domain;
 	u64 pend0;
-	int irq;
+	int ret;
 
 	/* copied from Irix intpend0() */
 	pend0 = LOCAL_HUB_L(PI_INT_PEND0);
@@ -216,10 +216,8 @@ static void ip27_do_irq_mask0(struct irq_desc *desc)
 #endif
 	{
 		domain = irq_desc_get_handler_data(desc);
-		irq = irq_linear_revmap(domain, __ffs(pend0));
-		if (irq)
-			generic_handle_irq(irq);
-		else
+		ret = generic_handle_domain_irq(domain, __ffs(pend0));
+		if (ret)
 			spurious_interrupt();
 	}
 
@@ -232,7 +230,7 @@ static void ip27_do_irq_mask1(struct irq_desc *desc)
 	unsigned long *mask = per_cpu(irq_enable_mask, cpu);
 	struct irq_domain *domain;
 	u64 pend1;
-	int irq;
+	int ret;
 
 	/* copied from Irix intpend0() */
 	pend1 = LOCAL_HUB_L(PI_INT_PEND1);
@@ -242,10 +240,8 @@ static void ip27_do_irq_mask1(struct irq_desc *desc)
 		return;
 
 	domain = irq_desc_get_handler_data(desc);
-	irq = irq_linear_revmap(domain, __ffs(pend1) + 64);
-	if (irq)
-		generic_handle_irq(irq);
-	else
+	ret = generic_handle_domain_irq(domain, __ffs(pend1) + 64);
+	if (ret)
 		spurious_interrupt();
 
 	LOCAL_HUB_L(PI_INT_PEND1);
diff --git a/arch/mips/sgi-ip30/ip30-irq.c b/arch/mips/sgi-ip30/ip30-irq.c
index ba87704073c8..423c32cb66ed 100644
--- a/arch/mips/sgi-ip30/ip30-irq.c
+++ b/arch/mips/sgi-ip30/ip30-irq.c
@@ -99,7 +99,7 @@ static void ip30_normal_irq(struct irq_desc *desc)
 	int cpu = smp_processor_id();
 	struct irq_domain *domain;
 	u64 pend, mask;
-	int irq;
+	int ret;
 
 	pend = heart_read(&heart_regs->isr);
 	mask = (heart_read(&heart_regs->imr[cpu]) &
@@ -130,10 +130,8 @@ static void ip30_normal_irq(struct irq_desc *desc)
 #endif
 	{
 		domain = irq_desc_get_handler_data(desc);
-		irq = irq_linear_revmap(domain, __ffs(pend));
-		if (irq)
-			generic_handle_irq(irq);
-		else
+		ret = generic_handle_domain_irq(domain, __ffs(pend));
+		if (ret)
 			spurious_interrupt();
 	}
 }