[PATCH 4.18 226/235] block/DAC960.c: fix defined but not used build warnings

From: Greg Kroah-Hartman
Date: Mon Sep 24 2018 - 08:45:09 EST


4.18-stable review patch. If anyone has any objections, please let me know.

------------------

From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>

[ Upstream commit 3993e501bf853cce85c5114a704b86b8f486790c ]

Fix build warnings in DAC960.c when CONFIG_PROC_FS is not enabled
by marking the unused functions as __maybe_unused.

../drivers/block/DAC960.c:6429:12: warning: 'dac960_proc_show' defined but not used [-Wunused-function]
../drivers/block/DAC960.c:6449:12: warning: 'dac960_initial_status_proc_show' defined but not used [-Wunused-function]
../drivers/block/DAC960.c:6456:12: warning: 'dac960_current_status_proc_show' defined but not used [-Wunused-function]

Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Cc: linux-block@xxxxxxxxxxxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/block/DAC960.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)

--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -21,6 +21,7 @@
#define DAC960_DriverDate "21 Aug 2007"


+#include <linux/compiler.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/miscdevice.h>
@@ -6426,7 +6427,7 @@ static bool DAC960_V2_ExecuteUserCommand
return true;
}

-static int dac960_proc_show(struct seq_file *m, void *v)
+static int __maybe_unused dac960_proc_show(struct seq_file *m, void *v)
{
unsigned char *StatusMessage = "OK\n";
int ControllerNumber;
@@ -6446,14 +6447,16 @@ static int dac960_proc_show(struct seq_f
return 0;
}

-static int dac960_initial_status_proc_show(struct seq_file *m, void *v)
+static int __maybe_unused dac960_initial_status_proc_show(struct seq_file *m,
+ void *v)
{
DAC960_Controller_T *Controller = (DAC960_Controller_T *)m->private;
seq_printf(m, "%.*s", Controller->InitialStatusLength, Controller->CombinedStatusBuffer);
return 0;
}

-static int dac960_current_status_proc_show(struct seq_file *m, void *v)
+static int __maybe_unused dac960_current_status_proc_show(struct seq_file *m,
+ void *v)
{
DAC960_Controller_T *Controller = (DAC960_Controller_T *) m->private;
unsigned char *StatusMessage =