diff mbox series

[10/10] irqchip/armada-370-xp: Refactor handling IPI interrupts

Message ID 20240711115748.30268-11-kabel@kernel.org (mailing list archive)
State New, archived
Headers show
Series armada-370-xp irqchip updates round 3 | expand

Commit Message

Marek Behún July 11, 2024, 11:57 a.m. UTC 
Refactor the handling of IPI interrupts
- put into own function mpic_handle_ipi_irq(), similar to
  mpic_handle_msi_irq()
- rename the variable holding the doorbell cause register to "cause"
- retype and rename the variable holding the IPI HW IRQ number to
  "irq_hw_number_t i"

Signed-off-by: Marek Behún <kabel@kernel.org>
---
 drivers/irqchip/irq-armada-370-xp.c | 31 +++++++++++++++++------------
 1 file changed, 18 insertions(+), 13 deletions(-)

Comments

Andrew Lunn July 11, 2024, 2:29 p.m. UTC | #1 
On Thu, Jul 11, 2024 at 01:57:48PM +0200, Marek Behún wrote:
> Refactor the handling of IPI interrupts
> - put into own function mpic_handle_ipi_irq(), similar to
>   mpic_handle_msi_irq()
> - rename the variable holding the doorbell cause register to "cause"
> - retype and rename the variable holding the IPI HW IRQ number to
>   "irq_hw_number_t i"
> 
> Signed-off-by: Marek Behún <kabel@kernel.org>

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

    Andrew
diff mbox series

Patch

diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c
index b31bf6c43a8b..be1c3721f980 100644
--- a/drivers/irqchip/irq-armada-370-xp.c
+++ b/drivers/irqchip/irq-armada-370-xp.c
@@ -635,6 +635,22 @@  static void mpic_handle_msi_irq(void)
 static void mpic_handle_msi_irq(void) {}
 #endif
 
+#ifdef CONFIG_SMP
+static void mpic_handle_ipi_irq(void)
+{
+	unsigned long cause;
+	irq_hw_number_t i;
+
+	cause = readl_relaxed(per_cpu_int_base + MPIC_IN_DRBEL_CAUSE);
+	cause &= IPI_DOORBELL_MASK;
+
+	for_each_set_bit(i, &cause, IPI_DOORBELL_END)
+		generic_handle_domain_irq(mpic_ipi_domain, i);
+}
+#else
+static inline void mpic_handle_ipi_irq(void) {}
+#endif
+
 static void mpic_handle_cascade_irq(struct irq_desc *desc)
 {
 	struct irq_chip *chip = irq_desc_get_chip(desc);
@@ -685,20 +701,9 @@  static void __exception_irq_entry mpic_handle_irq(struct pt_regs *regs)
 		if (irqnr == 1)
 			mpic_handle_msi_irq();
 
-#ifdef CONFIG_SMP
 		/* IPI Handling */
-		if (irqnr == 0) {
-			unsigned long ipimask;
-			int ipi;
-
-			ipimask = readl_relaxed(per_cpu_int_base +
-						MPIC_IN_DRBEL_CAUSE) &
-				  IPI_DOORBELL_MASK;
-
-			for_each_set_bit(ipi, &ipimask, IPI_DOORBELL_END)
-				generic_handle_domain_irq(mpic_ipi_domain, ipi);
-		}
-#endif
+		if (irqnr == 0)
+			mpic_handle_ipi_irq();
 	} while (1);
 }