[PATCH v2 15/20] media: imx290: mark read reg function as __always_unused

[Mauro Carvalho Chehab]

Such function is currently unused, but could be needed in the
future. So, keep it, marking it as __always_unused, in order to
avoid a clang W=1 error.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
---

See [PATCH v2 00/20] at: https://lore.kernel.org/all/cover.1638179135.git.mchehab+huawei@xxxxxxxxxx/

 drivers/media/i2c/imx290.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/i2c/imx290.c b/drivers/media/i2c/imx290.c
index bf7a6c37ca5d..99f2a50d39a4 100644
--- a/drivers/media/i2c/imx290.c
+++ b/drivers/media/i2c/imx290.c
@@ -363,7 +363,7 @@ static inline struct imx290 *to_imx290(struct v4l2_subdev *_sd)
 	return container_of(_sd, struct imx290, sd);
 }
 
-static inline int imx290_read_reg(struct imx290 *imx290, u16 addr, u8 *value)
+static inline int __always_unused imx290_read_reg(struct imx290 *imx290, u16 addr, u8 *value)
 {
 	unsigned int regval;
 	int ret;
-- 
2.33.1