Correct the initialization values at the start of the function
and use proper variable sizes to prevent overflow.

Signed-off-by: Benjamin Larsson <benja...@southpole.se>
---
 drivers/media/tuners/r820t.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/media/tuners/r820t.c b/drivers/media/tuners/r820t.c
index d9ee43f..ce10c18 100644
--- a/drivers/media/tuners/r820t.c
+++ b/drivers/media/tuners/r820t.c
@@ -1468,7 +1468,8 @@ static int r820t_imr_prepare(struct r820t_priv *priv)
 static int r820t_multi_read(struct r820t_priv *priv)
 {
        int rc, i;
-       u8 data[2], min = 0, max = 255, sum = 0;
+       u16 sum = 0;
+       u8 data[2], min = 255, max = 0;
 
        usleep_range(5000, 6000);
 
-- 
1.8.3.2

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