diff mbox series

[2/2] usb: xhci: tegra: mark PM functions as __maybe_unused

Message ID 20210421135613.3560777-2-arnd@kernel.org (mailing list archive)
State New, archived
Headers show
Series None | expand

Commit Message

Arnd Bergmann April 21, 2021, 1:56 p.m. UTC 
From: Arnd Bergmann <arnd@arndb.de>

The added #ifdefs in the PM rework were almost correct, but still
cause warnings in some randconfig builds:

drivers/usb/host/xhci-tegra.c:2147:12: error: 'tegra_xusb_resume' defined but not used [-Werror=unused-function]
 2147 | static int tegra_xusb_resume(struct device *dev)
      |            ^~~~~~~~~~~~~~~~~
drivers/usb/host/xhci-tegra.c:2105:12: error: 'tegra_xusb_suspend' defined but not used [-Werror=unused-function]
 2105 | static int tegra_xusb_suspend(struct device *dev)

Replace the #ifdef checks with simpler __maybe_unused annotations to
reliably shut up these warnings.

Fixes: d64d362f1d8b ("usb: xhci: tegra: Enable ELPG for runtime/system PM")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/usb/host/xhci-tegra.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

Comments

JC Kuo April 22, 2021, 1:54 a.m. UTC | #1 
Hi Arnd,
Thanks for the fix.

Reviewed-by: JC Kuo <jckuo@nvidia.com>


On 4/21/21 9:56 PM, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> The added #ifdefs in the PM rework were almost correct, but still
> cause warnings in some randconfig builds:
> 
> drivers/usb/host/xhci-tegra.c:2147:12: error: 'tegra_xusb_resume' defined but not used [-Werror=unused-function]
>  2147 | static int tegra_xusb_resume(struct device *dev)
>       |            ^~~~~~~~~~~~~~~~~
> drivers/usb/host/xhci-tegra.c:2105:12: error: 'tegra_xusb_suspend' defined but not used [-Werror=unused-function]
>  2105 | static int tegra_xusb_suspend(struct device *dev)
> 
> Replace the #ifdef checks with simpler __maybe_unused annotations to
> reliably shut up these warnings.
> 
> Fixes: d64d362f1d8b ("usb: xhci: tegra: Enable ELPG for runtime/system PM")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
>  drivers/usb/host/xhci-tegra.c | 12 ++++--------
>  1 file changed, 4 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c
> index ce97ff054c68..adead2377149 100644
> --- a/drivers/usb/host/xhci-tegra.c
> +++ b/drivers/usb/host/xhci-tegra.c
> @@ -1787,7 +1787,6 @@ static int tegra_xusb_remove(struct platform_device *pdev)
>  	return 0;
>  }
>  
> -#if IS_ENABLED(CONFIG_PM) || IS_ENABLED(CONFIG_PM_SLEEP)
>  static bool xhci_hub_ports_suspended(struct xhci_hub *hub)
>  {
>  	struct device *dev = hub->hcd->self.controller;
> @@ -2102,7 +2101,7 @@ static int tegra_xusb_exit_elpg(struct tegra_xusb *tegra, bool runtime)
>  	return err;
>  }
>  
> -static int tegra_xusb_suspend(struct device *dev)
> +static __maybe_unused int tegra_xusb_suspend(struct device *dev)
>  {
>  	struct tegra_xusb *tegra = dev_get_drvdata(dev);
>  	int err;
> @@ -2144,7 +2143,7 @@ static int tegra_xusb_suspend(struct device *dev)
>  	return err;
>  }
>  
> -static int tegra_xusb_resume(struct device *dev)
> +static __maybe_unused int tegra_xusb_resume(struct device *dev)
>  {
>  	struct tegra_xusb *tegra = dev_get_drvdata(dev);
>  	int err;
> @@ -2174,10 +2173,8 @@ static int tegra_xusb_resume(struct device *dev)
>  
>  	return 0;
>  }
> -#endif
>  
> -#ifdef CONFIG_PM
> -static int tegra_xusb_runtime_suspend(struct device *dev)
> +static __maybe_unused int tegra_xusb_runtime_suspend(struct device *dev)
>  {
>  	struct tegra_xusb *tegra = dev_get_drvdata(dev);
>  	int ret;
> @@ -2190,7 +2187,7 @@ static int tegra_xusb_runtime_suspend(struct device *dev)
>  	return ret;
>  }
>  
> -static int tegra_xusb_runtime_resume(struct device *dev)
> +static __maybe_unused int tegra_xusb_runtime_resume(struct device *dev)
>  {
>  	struct tegra_xusb *tegra = dev_get_drvdata(dev);
>  	int err;
> @@ -2201,7 +2198,6 @@ static int tegra_xusb_runtime_resume(struct device *dev)
>  
>  	return err;
>  }
> -#endif
>  
>  static const struct dev_pm_ops tegra_xusb_pm_ops = {
>  	SET_RUNTIME_PM_OPS(tegra_xusb_runtime_suspend,
>
JC Kuo April 22, 2021, 2:06 a.m. UTC | #2 
Hi Arnd,
Thanks for the fix.

Reviewed-by: JC Kuo <jckuo@nvidia.com>


On 4/21/21 9:56 PM, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> The added #ifdefs in the PM rework were almost correct, but still
> cause warnings in some randconfig builds:
> 
> drivers/usb/host/xhci-tegra.c:2147:12: error: 'tegra_xusb_resume' defined but not used [-Werror=unused-function]
>  2147 | static int tegra_xusb_resume(struct device *dev)
>       |            ^~~~~~~~~~~~~~~~~
> drivers/usb/host/xhci-tegra.c:2105:12: error: 'tegra_xusb_suspend' defined but not used [-Werror=unused-function]
>  2105 | static int tegra_xusb_suspend(struct device *dev)
> 
> Replace the #ifdef checks with simpler __maybe_unused annotations to
> reliably shut up these warnings.
> 
> Fixes: d64d362f1d8b ("usb: xhci: tegra: Enable ELPG for runtime/system PM")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
>  drivers/usb/host/xhci-tegra.c | 12 ++++--------
>  1 file changed, 4 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c
> index ce97ff054c68..adead2377149 100644
> --- a/drivers/usb/host/xhci-tegra.c
> +++ b/drivers/usb/host/xhci-tegra.c
> @@ -1787,7 +1787,6 @@ static int tegra_xusb_remove(struct platform_device *pdev)
>  	return 0;
>  }
>  
> -#if IS_ENABLED(CONFIG_PM) || IS_ENABLED(CONFIG_PM_SLEEP)
>  static bool xhci_hub_ports_suspended(struct xhci_hub *hub)
>  {
>  	struct device *dev = hub->hcd->self.controller;
> @@ -2102,7 +2101,7 @@ static int tegra_xusb_exit_elpg(struct tegra_xusb *tegra, bool runtime)
>  	return err;
>  }
>  
> -static int tegra_xusb_suspend(struct device *dev)
> +static __maybe_unused int tegra_xusb_suspend(struct device *dev)
>  {
>  	struct tegra_xusb *tegra = dev_get_drvdata(dev);
>  	int err;
> @@ -2144,7 +2143,7 @@ static int tegra_xusb_suspend(struct device *dev)
>  	return err;
>  }
>  
> -static int tegra_xusb_resume(struct device *dev)
> +static __maybe_unused int tegra_xusb_resume(struct device *dev)
>  {
>  	struct tegra_xusb *tegra = dev_get_drvdata(dev);
>  	int err;
> @@ -2174,10 +2173,8 @@ static int tegra_xusb_resume(struct device *dev)
>  
>  	return 0;
>  }
> -#endif
>  
> -#ifdef CONFIG_PM
> -static int tegra_xusb_runtime_suspend(struct device *dev)
> +static __maybe_unused int tegra_xusb_runtime_suspend(struct device *dev)
>  {
>  	struct tegra_xusb *tegra = dev_get_drvdata(dev);
>  	int ret;
> @@ -2190,7 +2187,7 @@ static int tegra_xusb_runtime_suspend(struct device *dev)
>  	return ret;
>  }
>  
> -static int tegra_xusb_runtime_resume(struct device *dev)
> +static __maybe_unused int tegra_xusb_runtime_resume(struct device *dev)
>  {
>  	struct tegra_xusb *tegra = dev_get_drvdata(dev);
>  	int err;
> @@ -2201,7 +2198,6 @@ static int tegra_xusb_runtime_resume(struct device *dev)
>  
>  	return err;
>  }
> -#endif
>  
>  static const struct dev_pm_ops tegra_xusb_pm_ops = {
>  	SET_RUNTIME_PM_OPS(tegra_xusb_runtime_suspend,
>
diff mbox series

Patch

diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c
index ce97ff054c68..adead2377149 100644
--- a/drivers/usb/host/xhci-tegra.c
+++ b/drivers/usb/host/xhci-tegra.c
@@ -1787,7 +1787,6 @@  static int tegra_xusb_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#if IS_ENABLED(CONFIG_PM) || IS_ENABLED(CONFIG_PM_SLEEP)
 static bool xhci_hub_ports_suspended(struct xhci_hub *hub)
 {
 	struct device *dev = hub->hcd->self.controller;
@@ -2102,7 +2101,7 @@  static int tegra_xusb_exit_elpg(struct tegra_xusb *tegra, bool runtime)
 	return err;
 }
 
-static int tegra_xusb_suspend(struct device *dev)
+static __maybe_unused int tegra_xusb_suspend(struct device *dev)
 {
 	struct tegra_xusb *tegra = dev_get_drvdata(dev);
 	int err;
@@ -2144,7 +2143,7 @@  static int tegra_xusb_suspend(struct device *dev)
 	return err;
 }
 
-static int tegra_xusb_resume(struct device *dev)
+static __maybe_unused int tegra_xusb_resume(struct device *dev)
 {
 	struct tegra_xusb *tegra = dev_get_drvdata(dev);
 	int err;
@@ -2174,10 +2173,8 @@  static int tegra_xusb_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
-#ifdef CONFIG_PM
-static int tegra_xusb_runtime_suspend(struct device *dev)
+static __maybe_unused int tegra_xusb_runtime_suspend(struct device *dev)
 {
 	struct tegra_xusb *tegra = dev_get_drvdata(dev);
 	int ret;
@@ -2190,7 +2187,7 @@  static int tegra_xusb_runtime_suspend(struct device *dev)
 	return ret;
 }
 
-static int tegra_xusb_runtime_resume(struct device *dev)
+static __maybe_unused int tegra_xusb_runtime_resume(struct device *dev)
 {
 	struct tegra_xusb *tegra = dev_get_drvdata(dev);
 	int err;
@@ -2201,7 +2198,6 @@  static int tegra_xusb_runtime_resume(struct device *dev)
 
 	return err;
 }
-#endif
 
 static const struct dev_pm_ops tegra_xusb_pm_ops = {
 	SET_RUNTIME_PM_OPS(tegra_xusb_runtime_suspend,