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

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Message-ID: <AM6PR04MB496663205D0EE8E6EEF731F680600@AM6PR04MB4966.eurprd04.prod.outlook.com>
Date:   Mon, 13 Jul 2020 10:03:41 +0000
From:   Aisheng Dong <aisheng.dong@....com>
To:     Vincenzo Frascino <vincenzo.frascino@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
CC:     Jassi Brar <jassisinghbrar@...il.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        dl-linux-imx <linux-imx@....com>
Subject: RE: [PATCH] drivers: soc: Fix mailbox suspend/resume no irq for IMX
 SCU

> From: Vincenzo Frascino <vincenzo.frascino@....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@...il.com>
> Cc: Shawn Guo <shawnguo@...nel.org>
> Cc: Sascha Hauer <s.hauer@...gutronix.de>
> Cc: Pengutronix Kernel Team <kernel@...gutronix.de>
> Cc: Fabio Estevam <festevam@...il.com>
> Cc: NXP Linux Team <linux-imx@....com>
> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@....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