[PATCH] media: camera-sensor.rst: fix c:function build warning

[Mauro Carvalho Chehab]

The :c:function: tag evaluation depends on Sphinx version 2 or 3.
Use a syntax that should work with both versions.

Fixes: c0e3bcb25390 ("media: camera-sensor.rst: fix a doc build warning")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
---
 Documentation/driver-api/media/camera-sensor.rst | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/Documentation/driver-api/media/camera-sensor.rst b/Documentation/driver-api/media/camera-sensor.rst
index cd5c989769a1..7160336aa475 100644
--- a/Documentation/driver-api/media/camera-sensor.rst
+++ b/Documentation/driver-api/media/camera-sensor.rst
@@ -144,9 +144,7 @@ of the device. This is because the power state of the device is only changed
 after the power state transition has taken place. The ``s_ctrl`` callback can be
 used to obtain device's power state after the power state transition:
 
-.. c:function::
-
-	int pm_runtime_get_if_in_use(struct device *dev);
+.. c:function:: int pm_runtime_get_if_in_use(struct device *dev);
 
 The function returns a non-zero value if it succeeded getting the power count or
 runtime PM was disabled, in either of which cases the driver may proceed to
-- 
2.30.2