tw9910: bit mask operation fix on tw9910_mask_set.
Commit Message
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
---
drivers/media/video/tw9910.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
@@ -460,9 +460,11 @@ static int tw9910_mask_set(struct i2c_client *client, u8 command,
u8 mask, u8 set)
{
s32 val = i2c_smbus_read_byte_data(client, command);
+ if (val < 0)
+ return val;
val &= ~mask;
- val |= set;
+ val |= set & mask;
return i2c_smbus_write_byte_data(client, command, val);
}