[PATCH v3 2/6] media: i2c: mt9p031: Rewrite assignment to make smatch happy

[Ricardo Ribalda]

The current code makes smatch a bit uncomfortable:
drivers/media/i2c/mt9p031.c:799 mt9p031_s_ctrl() warn: assigning (-1952) to unsigned variable 'data'

Probably because smatch is not clever enough (yet). Do a simple rewrite
to make sure that smatch understands what we are doing here.

Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
---
 drivers/media/i2c/mt9p031.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/media/i2c/mt9p031.c b/drivers/media/i2c/mt9p031.c
index ea5d43d925ff..8dc57eeba606 100644
--- a/drivers/media/i2c/mt9p031.c
+++ b/drivers/media/i2c/mt9p031.c
@@ -796,7 +796,8 @@ static int mt9p031_s_ctrl(struct v4l2_ctrl *ctrl)
 			data = (1 << 6) | (ctrl->val >> 1);
 		} else {
 			ctrl->val &= ~7;
-			data = ((ctrl->val - 64) << 5) | (1 << 6) | 32;
+			data = ((ctrl->val - 64) >> 3) & 0x7f;
+			data = (data << 8) | (1 << 6) | 32;
 		}
 
 		return mt9p031_write(client, MT9P031_GLOBAL_GAIN, data);

-- 
2.54.0.545.g6539524ca2-goog