[tip: irq/drivers] irqchip/irq-pic32-evic: Add __maybe_unused for board_bind_eic_interrupt in COMPILE_TEST

[tip-bot2 for Brian Masney]

The following commit has been merged into the irq/drivers branch of tip:

Commit-ID:     1fac04a0a4737c4da3d55d7708931166a4a7136a
Gitweb:        https://git.kernel.org/tip/1fac04a0a4737c4da3d55d7708931166a4a7136a
Author:        Brian Masney <bmasney@xxxxxxxxxx>
AuthorDate:    Fri, 03 Apr 2026 17:12:17 -04:00
Committer:     Thomas Gleixner <tglx@xxxxxxxxxx>
CommitterDate: Tue, 07 Apr 2026 11:19:02 +02:00

irqchip/irq-pic32-evic: Add __maybe_unused for board_bind_eic_interrupt in COMPILE_TEST

There are a few ifdefs in this driver so that it can be compiled on all
architectures when COMPILE_TEST is set. board_bind_eic_interrupt is
defined in arch/mips/ for normal usage, however when this driver is
compiled with COMPILE_TEST on other architectures, it is defined as a
static variable inside this driver. This causes the following warning:

    drivers/irqchip/irq-pic32-evic.c:54:15: warning: variable
      'board_bind_eic_interrupt' set but not used [-Wunused-but-set-global]
          54 | static void (*board_bind_eic_interrupt)(int irq,
                                                       int regset);
             |               ^

Annotate the static variable with __maybe_unused to avoid having to put
even more ifdefs into this driver.

Fixes: 282f8b547d51d ("irqchip/irq-pic32-evic: Define board_bind_eic_interrupt for !MIPS builds")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Brian Masney <bmasney@xxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxx>
Link: https://patch.msgid.link/20260403-irq-pic32-evic-unused-v1-1-447cdc0675ec@xxxxxxxxxx
Closes: https://lore.kernel.org/oe-kbuild-all/202603300715.4HuMMAFb-lkp@xxxxxxxxx/
---
 drivers/irqchip/irq-pic32-evic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-pic32-evic.c b/drivers/irqchip/irq-pic32-evic.c
index ecea7cb..3c48288 100644
--- a/drivers/irqchip/irq-pic32-evic.c
+++ b/drivers/irqchip/irq-pic32-evic.c
@@ -51,7 +51,7 @@ asmlinkage void __weak plat_irq_dispatch(void)
 	do_domain_IRQ(evic_irq_domain, hwirq);
 }
 #else
-static void (*board_bind_eic_interrupt)(int irq, int regset);
+static __maybe_unused void (*board_bind_eic_interrupt)(int irq, int regset);
 #endif
 
 static struct evic_chip_data *irqd_to_priv(struct irq_data *data)