When CONFIG_PM and CONFIG_PM_SLEEP are unset, the following warnings occur:
drivers/mailbox/imx-mailbox.c:638:12: warning: 'imx_mu_runtime_resume' defined but not used [-Wunused-function] 638 | static int imx_mu_runtime_resume(struct device *dev) | ^~~~~~~~~~~~~~~~~~~~~ drivers/mailbox/imx-mailbox.c:629:12: warning: 'imx_mu_runtime_suspend' defined but not used [-Wunused-function] 629 | static int imx_mu_runtime_suspend(struct device *dev) | ^~~~~~~~~~~~~~~~~~~~~~ drivers/mailbox/imx-mailbox.c:611:12: warning: 'imx_mu_resume_noirq' defined but not used [-Wunused-function] 611 | 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] 601 | static int imx_mu_suspend_noirq(struct device *dev) | ^~~~~~~~~~~~~~~~~~~~ Mark these functions as __maybe_unused, which is the standard procedure for PM functions. Fixes: bb2b2624dbe2 ("mailbox: imx: Add runtime PM callback to handle MU clocks") Signed-off-by: Nathan Chancellor <natechancel...@gmail.com> --- drivers/mailbox/imx-mailbox.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c index 7205b825c8b5..2543c7b6948b 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); @@ -626,7 +626,7 @@ static int imx_mu_resume_noirq(struct device *dev) return 0; } -static int imx_mu_runtime_suspend(struct device *dev) +static int __maybe_unused imx_mu_runtime_suspend(struct device *dev) { struct imx_mu_priv *priv = dev_get_drvdata(dev); @@ -635,7 +635,7 @@ static int imx_mu_runtime_suspend(struct device *dev) return 0; } -static int imx_mu_runtime_resume(struct device *dev) +static int __maybe_unused imx_mu_runtime_resume(struct device *dev) { struct imx_mu_priv *priv = dev_get_drvdata(dev); int ret; base-commit: 27f11fea33608cbd321a97cbecfa2ef97dcc1821 -- 2.27.0