diff options
| author | Kuninori Morimoto <morimoto.kuninori@renesas.com> | 2009-02-23 12:12:58 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-03-30 12:42:52 -0300 |
| commit | 1af1b7a2def2f0936fc95edb5dcb3871934b7852 (patch) | |
| tree | def0416c1e1f307982e119d2885671b731e96130 /drivers/media/video | |
| parent | 051489119affd527f2834e9f8ba3e2a71bf1ca23 (diff) | |
V4L/DVB (10670): tw9910: bit mask operation fix on tw9910_mask_set.
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video')
| -rw-r--r-- | drivers/media/video/tw9910.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/media/video/tw9910.c b/drivers/media/video/tw9910.c index 8dc3ec79a06..0558b22fd3f 100644 --- a/drivers/media/video/tw9910.c +++ b/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); } |