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* [PATCH] irqchip/riscv-intc: Fix use of AIA IRQs 32-63 on riscv32
@ 2024-03-12 21:28 Samuel Holland
  2024-03-13  4:34 ` Anup Patel
                   ` (3 more replies)
  0 siblings, 4 replies; 5+ messages in thread
From: Samuel Holland @ 2024-03-12 21:28 UTC (permalink / raw)
  To: Anup Patel, Thomas Gleixner
  Cc: Samuel Holland, Albert Ou, Palmer Dabbelt, Paul Walmsley,
	linux-kernel, linux-riscv

riscv_intc_custom_base is initialized to BITS_PER_LONG, so the second
check passes even though AIA provides 64 IRQs. Adjust the condition to
only check the custom IRQ range for IRQs outside the standard range, and
adjust the standard range when AIA is available.

Fixes: bb7921cdea12 ("irqchip/riscv-intc: Add support for RISC-V AIA")
Fixes: e6bd9b966dc8 ("irqchip/riscv-intc: Fix low-level interrupt handler setup for AIA")
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
---

 drivers/irqchip/irq-riscv-intc.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/irqchip/irq-riscv-intc.c b/drivers/irqchip/irq-riscv-intc.c
index f87aeab460eb..9e71c4428814 100644
--- a/drivers/irqchip/irq-riscv-intc.c
+++ b/drivers/irqchip/irq-riscv-intc.c
@@ -149,8 +149,9 @@ static int riscv_intc_domain_alloc(struct irq_domain *domain,
 	 * Only allow hwirq for which we have corresponding standard or
 	 * custom interrupt enable register.
 	 */
-	if ((hwirq >= riscv_intc_nr_irqs && hwirq < riscv_intc_custom_base) ||
-	    (hwirq >= riscv_intc_custom_base + riscv_intc_custom_nr_irqs))
+	if (hwirq >= riscv_intc_nr_irqs &&
+	    (hwirq < riscv_intc_custom_base ||
+	     hwirq >= riscv_intc_custom_base + riscv_intc_custom_nr_irqs))
 		return -EINVAL;
 
 	for (i = 0; i < nr_irqs; i++) {
@@ -183,10 +184,12 @@ static int __init riscv_intc_init_common(struct fwnode_handle *fn, struct irq_ch
 		return -ENXIO;
 	}
 
-	if (riscv_isa_extension_available(NULL, SxAIA))
+	if (riscv_isa_extension_available(NULL, SxAIA)) {
+		riscv_intc_nr_irqs = 64;
 		rc = set_handle_irq(&riscv_intc_aia_irq);
-	else
+	} else {
 		rc = set_handle_irq(&riscv_intc_irq);
+	}
 	if (rc) {
 		pr_err("failed to set irq handler\n");
 		return rc;
@@ -195,7 +198,7 @@ static int __init riscv_intc_init_common(struct fwnode_handle *fn, struct irq_ch
 	riscv_set_intc_hwnode_fn(riscv_intc_hwnode);
 
 	pr_info("%d local interrupts mapped%s\n",
-		riscv_isa_extension_available(NULL, SxAIA) ? 64 : riscv_intc_nr_irqs,
+		riscv_intc_nr_irqs,
 		riscv_isa_extension_available(NULL, SxAIA) ? " using AIA" : "");
 	if (riscv_intc_custom_nr_irqs)
 		pr_info("%d custom local interrupts mapped\n", riscv_intc_custom_nr_irqs);
-- 
2.43.1


^ permalink raw reply related	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2024-03-25  4:42 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2024-03-12 21:28 [PATCH] irqchip/riscv-intc: Fix use of AIA IRQs 32-63 on riscv32 Samuel Holland
2024-03-13  4:34 ` Anup Patel
2024-03-13 10:55 ` [tip: irq/urgent] irqchip/riscv-intc: Fix use of AIA interrupts " tip-bot2 for Samuel Holland
2024-03-15 18:54 ` tip-bot2 for Samuel Holland
2024-03-25  4:42 ` [PATCH] irqchip/riscv-intc: Fix use of AIA IRQs " patchwork-bot+linux-riscv

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