[PATCH v2] fix:iio:common:st_sensors:st_sensors_trigger:mark symbols static where possible

[Baoyou Xie]

We get 2 warnings when biuld kernel with W=1:
drivers/iio/common/st_sensors/st_sensors_trigger.c:69:13: warning: no previous prototype
for 'st_sensors_irq_handler' [-Wmissing-prototypes]
drivers/iio/common/st_sensors/st_sensors_trigger.c:85:13: warning: no previous prototype
for 'st_sensors_irq_thread' [-Wmissing-prototypes]

In fact, these functions are only used in the file in which they are
declared and don't need a declaration, but can be made static.
so this patch marks these functions with 'static'.

Signed-off-by: Baoyou Xie <baoyou.xie@xxxxxxxxxx>
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
 drivers/iio/common/st_sensors/st_sensors_trigger.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/common/st_sensors/st_sensors_trigger.c b/drivers/iio/common/st_sensors/st_sensors_trigger.c
index e66f12e..fa73e67 100644
--- a/drivers/iio/common/st_sensors/st_sensors_trigger.c
+++ b/drivers/iio/common/st_sensors/st_sensors_trigger.c
@@ -66,7 +66,7 @@ static int st_sensors_new_samples_available(struct iio_dev *indio_dev,
  * @irq: irq number
  * @p: private handler data
  */
-irqreturn_t st_sensors_irq_handler(int irq, void *p)
+static irqreturn_t st_sensors_irq_handler(int irq, void *p)
 {
 	struct iio_trigger *trig = p;
 	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
@@ -82,7 +82,7 @@ irqreturn_t st_sensors_irq_handler(int irq, void *p)
  * @irq: irq number
  * @p: private handler data
  */
-irqreturn_t st_sensors_irq_thread(int irq, void *p)
+static irqreturn_t st_sensors_irq_thread(int irq, void *p)
 {
 	struct iio_trigger *trig = p;
 	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
-- 
2.7.4