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| author |   Arnd Bergmann <arnd@arndb.de> | 2015-11-20 22:59:14 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-02-07 20:03:50 -0800 |
| commit | 9045a4a7e686a6316129d6d0b21b4fe2520968e4 (patch) | |
| tree | f7c4dac00d79494dbcb0d335bd53f0aa76ee34fc | |
| parent | Staging: ste_rmi4: constify synaptics_rmi4_platform_data structures (diff) | |
| download | linux-dev-9045a4a7e686a6316129d6d0b21b4fe2520968e4.tar.xz linux-dev-9045a4a7e686a6316129d6d0b21b4fe2520968e4.zip | |
staging: ste_rmi4: avoid unused function warnings
The rmi4 touchscreen driver encloses the power-management
functions in #ifdef CONFIG_PM, but the smtcfb_pci_suspend/resume
functions are only really used when CONFIG_PM_SLEEP is also
set, as a frequent gcc warning shows:
ste_rmi4/synaptics_i2c_rmi4.c:1050:12: warning: 'synaptics_rmi4_suspend' defined but not used
ste_rmi4/synaptics_i2c_rmi4.c:1084:12: warning: 'synaptics_rmi4_resume' defined but not used
This changes the driver to remove the #ifdef and instead mark
the functions as __maybe_unused, which is a nicer anyway, as it
provides build testing for all the code in all configurations
and is harder to get wrong.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c b/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c index bbec02763b39..54c17b1186d5 100644 --- a/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c +++ b/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c @@ -1039,7 +1039,6 @@ static int synaptics_rmi4_remove(struct i2c_client *client) return 0; } -#ifdef CONFIG_PM /** * synaptics_rmi4_suspend() - suspend the touch screen controller * @dev: pointer to device structure @@ -1047,7 +1046,7 @@ static int synaptics_rmi4_remove(struct i2c_client *client) * This function is used to suspend the * touch panel controller and returns integer */ -static int synaptics_rmi4_suspend(struct device *dev) +static int __maybe_unused synaptics_rmi4_suspend(struct device *dev) { /* Touch sleep mode */ int retval; @@ -1081,7 +1080,7 @@ static int synaptics_rmi4_suspend(struct device *dev) * This function is used to resume the touch panel * controller and returns integer. */ -static int synaptics_rmi4_resume(struct device *dev) +static int __maybe_unused synaptics_rmi4_resume(struct device *dev) { int retval; unsigned char intr_status; @@ -1112,8 +1111,6 @@ static int synaptics_rmi4_resume(struct device *dev) return 0; } -#endif - static SIMPLE_DEV_PM_OPS(synaptics_rmi4_dev_pm_ops, synaptics_rmi4_suspend, synaptics_rmi4_resume); |