diff options
Diffstat (limited to 'linux/drivers/media/video/tw9910.c')
| -rw-r--r-- | linux/drivers/media/video/tw9910.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/linux/drivers/media/video/tw9910.c b/linux/drivers/media/video/tw9910.c index 4593cdea7..ed8dca3bf 100644 --- a/linux/drivers/media/video/tw9910.c +++ b/linux/drivers/media/video/tw9910.c @@ -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); } |