Commit 47ec340cb8e232671e7c4a4689ff32c3bdf329da 'mfd: max8925: Support dt for backlight'
caused a gcc warning if CONFIG_OF is not defined:
drivers/video/backlight/max8925_bl.c: In function 'max8925_backlight_probe':
drivers/video/backlight/max8925_bl.c:177:3: warning: statement with no effect [-Wunused-value]
gcc version 4.6.3
Convert max8925_backlight_dt_init() to an 'inline void' since it is only
called from one place where the return code is ignored. Protect the
guts of the function with '#ifdef CONFIG_OF'.
Cc: Richard Purdie <rpurdie@xxxxxxxxx>
Cc: Florian Tobias Schandinat <FlorianSchandinat@xxxxxx>
Cc: linux-fbdev@xxxxxxxxxxxxxxx
Signed-off-by: Tim Gardner <tim.gardner@xxxxxxxxxxxxx>
---
drivers/video/backlight/max8925_bl.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/video/backlight/max8925_bl.c b/drivers/video/backlight/max8925_bl.c
index 5ca11b0..199f887 100644
--- a/drivers/video/backlight/max8925_bl.c
+++ b/drivers/video/backlight/max8925_bl.c
@@ -101,10 +101,10 @@ static const struct backlight_ops max8925_backlight_ops = {
.get_brightness = max8925_backlight_get_brightness,
};
-#ifdef CONFIG_OF
-static int max8925_backlight_dt_init(struct platform_device *pdev,
+static inline void max8925_backlight_dt_init(struct platform_device *pdev,
struct max8925_backlight_pdata *pdata)
{
+#ifdef CONFIG_OF
struct device_node *nproot = pdev->dev.parent->of_node, *np;
int dual_string;
@@ -118,11 +118,8 @@ static int max8925_backlight_dt_init(struct platform_device *pdev,
of_property_read_u32(np, "maxim,max8925-dual-string", &dual_string);
pdata->dual_string = dual_string;
- return 0;
-}
-#else
-#define max8925_backlight_dt_init(x, y) (-1)
#endif
+}
static int max8925_backlight_probe(struct platform_device *pdev)
{
--
1.7.9.5
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