From: Arnd Bergmann <arnd@arndb.de>
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] fbdev: auo_k190x: avoid unused function warnings
Date: Fri, 20 Nov 2015 21:47:41 +0000 [thread overview]
Message-ID: <3917686.rD8ezhD468@wuerfel> (raw)
The auo_k190x framebuffer driver encloses the power-management
functions in #ifdef CONFIG_PM, but the auok190x_suspend/resume
functions are only really used when CONFIG_PM_SLEEP is also
set, as a frequent gcc warning shows:
drivers/video/fbdev/auo_k190x.c:859:12: warning: 'auok190x_suspend' defined but not used
drivers/video/fbdev/auo_k190x.c:899:12: warning: 'auok190x_resume' defined but not used
This changes the driver to remove the #ifdef and instead mark
the functions as __maybe_unused, which is a nicer anyway, as it
provides build testing for all the code in all configurations
and is harder to get wrong.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/drivers/video/fbdev/auo_k190x.c b/drivers/video/fbdev/auo_k190x.c
index 8d2499d1cafb..9580374667ba 100644
--- a/drivers/video/fbdev/auo_k190x.c
+++ b/drivers/video/fbdev/auo_k190x.c
@@ -773,9 +773,7 @@ static void auok190x_recover(struct auok190xfb_par *par)
/*
* Power-management
*/
-
-#ifdef CONFIG_PM
-static int auok190x_runtime_suspend(struct device *dev)
+static int __maybe_unused auok190x_runtime_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct fb_info *info = platform_get_drvdata(pdev);
@@ -822,7 +820,7 @@ finish:
return 0;
}
-static int auok190x_runtime_resume(struct device *dev)
+static int __maybe_unused auok190x_runtime_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct fb_info *info = platform_get_drvdata(pdev);
@@ -856,7 +854,7 @@ static int auok190x_runtime_resume(struct device *dev)
return 0;
}
-static int auok190x_suspend(struct device *dev)
+static int __maybe_unused auok190x_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct fb_info *info = platform_get_drvdata(pdev);
@@ -896,7 +894,7 @@ static int auok190x_suspend(struct device *dev)
return 0;
}
-static int auok190x_resume(struct device *dev)
+static int __maybe_unused auok190x_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct fb_info *info = platform_get_drvdata(pdev);
@@ -933,7 +931,6 @@ static int auok190x_resume(struct device *dev)
return 0;
}
-#endif
const struct dev_pm_ops auok190x_pm = {
SET_RUNTIME_PM_OPS(auok190x_runtime_suspend, auok190x_runtime_resume,
next reply other threads:[~2015-11-20 21:47 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-20 21:47 Arnd Bergmann [this message]
2015-12-07 16:10 ` [PATCH] fbdev: auo_k190x: avoid unused function warnings Tomi Valkeinen
2015-12-07 16:16 ` Arnd Bergmann
2015-12-07 16:20 ` Tomi Valkeinen
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