[PATCH 4.4 23/41] spi: Fix tegra20 build with CONFIG_PM=n

Greg Kroah-Hartman
2021-10-04T12:56:36Z

From: Linus Torvalds <torvalds@linux-foundation.org>

[ Upstream commit efafec27c5658ed987e720130772f8933c685e87 ]

Without CONFIG_PM enabled, the SET_RUNTIME_PM_OPS() macro ends up being
empty, and the only use of tegra_slink_runtime_{resume,suspend} goes
away, resulting in

drivers/spi/spi-tegra20-slink.c:1200:12: error: ‘tegra_slink_runtime_resume’ defined but not used [-Werror=unused-function]
1200 | static int tegra_slink_runtime_resume(struct device *dev)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/spi/spi-tegra20-slink.c:1188:12: error: ‘tegra_slink_runtime_suspend’ defined but not used [-Werror=unused-function]
1188 | static int tegra_slink_runtime_suspend(struct device *dev)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~

mark the functions __maybe_unused to make the build happy.

This hits the alpha allmodconfig build (and others).

Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/spi/spi-tegra20-slink.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/spi/spi-tegra20-slink.c
+++ b/drivers/spi/spi-tegra20-slink.c
@@ -1210,7 +1210,7 @@ static int tegra_slink_resume(struct dev
}
#endif

-static int tegra_slink_runtime_suspend(struct device *dev)
+static int __maybe_unused tegra_slink_runtime_suspend(struct device *dev)
{
struct spi_master *master = dev_get_drvdata(dev);
struct tegra_slink_data *tspi = spi_master_get_devdata(master);
@@ -1222,7 +1222,7 @@ static int tegra_slink_runtime_suspend(s
return 0;
}

-static int tegra_slink_runtime_resume(struct device *dev)
+static int __maybe_unused tegra_slink_runtime_resume(struct device *dev)
{
struct spi_master *master = dev_get_drvdata(dev);
struct tegra_slink_data *tspi = spi_master_get_devdata(master);