linux-kernel - [PATCH v2] macintosh/via-pmu: Avoid compiler warnings when CONFIG_PROC

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Message-Id: <0c11c0770fc4ec7e80a4b2e0ffce1055b792cfdb.1647854880.git.fthain@linux-m68k.org>
Date:   Mon, 21 Mar 2022 20:28:00 +1100
From:   Finn Thain <fthain@...ux-m68k.org>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:     "Randy Dunlap" <rdunlap@...radead.org>,
        "Christophe Leroy" <christophe.leroy@...roup.eu>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2] macintosh/via-pmu: Avoid compiler warnings when
 CONFIG_PROC_FS is disabled

drivers/macintosh/via-pmu.c:897:12: warning: 'pmu_battery_proc_show' defined but not used [-Wunused-function]
 static int pmu_battery_proc_show(struct seq_file *m, void *v)
            ^~~~~~~~~~~~~~~~~~~~~
drivers/macintosh/via-pmu.c:871:12: warning: 'pmu_irqstats_proc_show' defined but not used [-Wunused-function]
 static int pmu_irqstats_proc_show(struct seq_file *m, void *v)
            ^~~~~~~~~~~~~~~~~~~~~~
drivers/macintosh/via-pmu.c:860:12: warning: 'pmu_info_proc_show' defined but not used [-Wunused-function]
 static int pmu_info_proc_show(struct seq_file *m, void *v)
            ^~~~~~~~~~~~~~~~~~

Add some #ifdefs to avoid unused code warnings when CONFIG_PROC_FS is
disabled.

Cc: Randy Dunlap <rdunlap@...radead.org>
Cc: Christophe Leroy <christophe.leroy@...roup.eu>
Reported-by: Randy Dunlap <rdunlap@...radead.org>
Suggested-by: Christophe Leroy <christophe.leroy@...roup.eu>
Signed-off-by: Finn Thain <fthain@...ux-m68k.org>
---
Changed since v1:
 - Simplified to take advantage of the fact that proc_mkdir() is stubbed
   out when CONFIG_PROC_FS=n. Hence that call doesn't need to move
   within the #ifdef.
---
 drivers/macintosh/via-pmu.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index 2109129ea1bb..495fd35b11de 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -204,9 +204,11 @@ static int init_pmu(void);
 static void pmu_start(void);
 static irqreturn_t via_pmu_interrupt(int irq, void *arg);
 static irqreturn_t gpio1_interrupt(int irq, void *arg);
+#ifdef CONFIG_PROC_FS
 static int pmu_info_proc_show(struct seq_file *m, void *v);
 static int pmu_irqstats_proc_show(struct seq_file *m, void *v);
 static int pmu_battery_proc_show(struct seq_file *m, void *v);
+#endif
 static void pmu_pass_intr(unsigned char *data, int len);
 static const struct proc_ops pmu_options_proc_ops;
 
@@ -857,6 +859,7 @@ query_battery_state(void)
 			2, PMU_SMART_BATTERY_STATE, pmu_cur_battery+1);
 }
 
+#ifdef CONFIG_PROC_FS
 static int pmu_info_proc_show(struct seq_file *m, void *v)
 {
 	seq_printf(m, "PMU driver version     : %d\n", PMU_DRIVER_VERSION);
@@ -977,6 +980,7 @@ static const struct proc_ops pmu_options_proc_ops = {
 	.proc_release	= single_release,
 	.proc_write	= pmu_options_proc_write,
 };
+#endif
 
 #ifdef CONFIG_ADB
 /* Send an ADB command */
-- 
2.32.0