linux-kernel - [PATCH] irqchip: st: fix defined but not used compilation warning

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Message-Id: <20161217002927.31947-1-jeremy.lefaure@lse.epita.fr>
Date:   Fri, 16 Dec 2016 19:29:27 -0500
From:   Jérémy Lefaure 
        <jeremy.lefaure@....epita.fr>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <marc.zyngier@....com>
Cc:     linux-kernel@...r.kernel.org,
        Jérémy Lefaure 
        <jeremy.lefaure@....epita.fr>
Subject: [PATCH] irqchip: st: fix defined but not used compilation warning

When CONFIG_PM_SLEEP is disabled, the compiler raises a warning on
st_irq_syscfg_resume:

drivers/irqchip/irq-st.c:183:12: warning: 'st_irq_syscfg_resume' defined
but not used [-Wunused-function]
 static int st_irq_syscfg_resume(struct device *dev)
             ^~~~~~~~~~~~~~~~~~~~

Adding __maybe_unused to the declaration of this functions removes the
warning.

Signed-off-by: Jérémy Lefaure <jeremy.lefaure@....epita.fr>
---
 drivers/irqchip/irq-st.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-st.c b/drivers/irqchip/irq-st.c
index 9af48a85c16f..5e0e250db0be 100644
--- a/drivers/irqchip/irq-st.c
+++ b/drivers/irqchip/irq-st.c
@@ -180,7 +180,7 @@ static int st_irq_syscfg_probe(struct platform_device *pdev)
 	return st_irq_syscfg_enable(pdev);
 }
 
-static int st_irq_syscfg_resume(struct device *dev)
+static int __maybe_unused st_irq_syscfg_resume(struct device *dev)
 {
 	struct st_irq_syscfg *ddata = dev_get_drvdata(dev);
 
-- 
2.11.0