[PATCH] drivers: soc: Fix mailbox suspend/resume no irq for IMX SCU

[PATCH] drivers: soc: Fix mailbox suspend/resume no irq for IMX SCU

[Vincenzo Frascino]

imx_mu_suspend_noirq()/imx_mu_resume_noirq() are currently used only
when CONFIG_PM_SLEEP configuration options is enabled. Having it
disabled triggers the following warning at compile time:

drivers/mailbox/imx-mailbox.c:611:12: warning: ‘imx_mu_resume_noirq’
defined but not used [-Wunused-function]
  static int imx_mu_resume_noirq(struct device *dev)

drivers/mailbox/imx-mailbox.c:601:12: warning: ‘imx_mu_suspend_noirq’
defined but not used [-Wunused-function]
  static int imx_mu_suspend_noirq(struct device *dev)

Make imx_mu_suspend_noirq()/imx_mu_resume_noirq() __maybe_unused to
address the issue.

Cc: Jassi Brar <jassisinghbrar@gmail.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
 drivers/mailbox/imx-mailbox.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c
index 7205b825c8b5..f54f36948414 100644
--- a/drivers/mailbox/imx-mailbox.c
+++ b/drivers/mailbox/imx-mailbox.c
@@ -598,7 +598,7 @@ static const struct of_device_id imx_mu_dt_ids[] = {
 };
 MODULE_DEVICE_TABLE(of, imx_mu_dt_ids);
 
-static int imx_mu_suspend_noirq(struct device *dev)
+static int __maybe_unused imx_mu_suspend_noirq(struct device *dev)
 {
 	struct imx_mu_priv *priv = dev_get_drvdata(dev);
 
@@ -608,7 +608,7 @@ static int imx_mu_suspend_noirq(struct device *dev)
 	return 0;
 }
 
-static int imx_mu_resume_noirq(struct device *dev)
+static int __maybe_unused imx_mu_resume_noirq(struct device *dev)
 {
 	struct imx_mu_priv *priv = dev_get_drvdata(dev);
 
-- 
2.27.0

Re: [PATCH] drivers: soc: Fix mailbox suspend/resume no irq for IMX SCU

[Daniel Baluta]

On 06.07.2020 18:00, Vincenzo Frascino wrote:
> imx_mu_suspend_noirq()/imx_mu_resume_noirq() are currently used only
> when CONFIG_PM_SLEEP configuration options is enabled. Having it
> disabled triggers the following warning at compile time:
>
> drivers/mailbox/imx-mailbox.c:611:12: warning: ‘imx_mu_resume_noirq’
> defined but not used [-Wunused-function]
>    static int imx_mu_resume_noirq(struct device *dev)
>
> drivers/mailbox/imx-mailbox.c:601:12: warning: ‘imx_mu_suspend_noirq’
> defined but not used [-Wunused-function]
>    static int imx_mu_suspend_noirq(struct device *dev)
>
> Make imx_mu_suspend_noirq()/imx_mu_resume_noirq() __maybe_unused to
> address the issue.
>
> Cc: Jassi Brar <jassisinghbrar@gmail.com>
> Cc: Shawn Guo <shawnguo@kernel.org>
> Cc: Sascha Hauer <s.hauer@pengutronix.de>
> Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
> Cc: Fabio Estevam <festevam@gmail.com>
> Cc: NXP Linux Team <linux-imx@nxp.com>
> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>

Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>

RE: [PATCH] drivers: soc: Fix mailbox suspend/resume no irq for IMX SCU

[Aisheng Dong]

> From: Vincenzo Frascino <vincenzo.frascino@arm.com>
> Sent: Monday, July 6, 2020 11:00 PM
> 
> imx_mu_suspend_noirq()/imx_mu_resume_noirq() are currently used only
> when CONFIG_PM_SLEEP configuration options is enabled. Having it disabled
> triggers the following warning at compile time:
> 
> drivers/mailbox/imx-mailbox.c:611:12: warning: ‘imx_mu_resume_noirq’
> defined but not used [-Wunused-function]
>   static int imx_mu_resume_noirq(struct device *dev)
> 
> drivers/mailbox/imx-mailbox.c:601:12: warning: ‘imx_mu_suspend_noirq’
> defined but not used [-Wunused-function]
>   static int imx_mu_suspend_noirq(struct device *dev)
> 
> Make imx_mu_suspend_noirq()/imx_mu_resume_noirq() __maybe_unused to
> address the issue.
> 
> Cc: Jassi Brar <jassisinghbrar@gmail.com>
> Cc: Shawn Guo <shawnguo@kernel.org>
> Cc: Sascha Hauer <s.hauer@pengutronix.de>
> Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
> Cc: Fabio Estevam <festevam@gmail.com>
> Cc: NXP Linux Team <linux-imx@nxp.com>
> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>

There's already a fix:
https://lkml.org/lkml/2020/6/22/1555

Regards
Aisheng

> ---
>  drivers/mailbox/imx-mailbox.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c
> index 7205b825c8b5..f54f36948414 100644
> --- a/drivers/mailbox/imx-mailbox.c
> +++ b/drivers/mailbox/imx-mailbox.c
> @@ -598,7 +598,7 @@ static const struct of_device_id imx_mu_dt_ids[] = {  };
> MODULE_DEVICE_TABLE(of, imx_mu_dt_ids);
> 
> -static int imx_mu_suspend_noirq(struct device *dev)
> +static int __maybe_unused imx_mu_suspend_noirq(struct device *dev)
>  {
>  	struct imx_mu_priv *priv = dev_get_drvdata(dev);
> 
> @@ -608,7 +608,7 @@ static int imx_mu_suspend_noirq(struct device *dev)
>  	return 0;
>  }
> 
> -static int imx_mu_resume_noirq(struct device *dev)
> +static int __maybe_unused imx_mu_resume_noirq(struct device *dev)
>  {
>  	struct imx_mu_priv *priv = dev_get_drvdata(dev);
> 
> --
> 2.27.0