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authorLad, Prabhakar <prabhakar.csengg@gmail.com>2013-05-25 13:39:36 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2013-06-13 11:42:17 -0300
commitdd8c393b3c39f7ebd9ad69ce50cc836773d512b6 (patch)
tree9d0364b9ff8de67daef444390dd26f1d85da286c /drivers
parent8524ce558a0111762efa1a6b5ba9ce5e092b4707 (diff)
download96b-common-dd8c393b3c39f7ebd9ad69ce50cc836773d512b6.tar.gz
[media] media: i2c: ths7303: make the pdata as a constant pointer
generally the pdata needs to be a constant pointer in the device state structure. This patch makes the pdata as a constant pointer and alongside returns -EINVAL when pdata is NULL. Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/media/i2c/ths7303.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/media/i2c/ths7303.c b/drivers/media/i2c/ths7303.c
index af06187c74f8..b954195cfbe7 100644
--- a/drivers/media/i2c/ths7303.c
+++ b/drivers/media/i2c/ths7303.c
@@ -35,7 +35,7 @@
struct ths7303_state {
struct v4l2_subdev sd;
- struct ths7303_platform_data pdata;
+ const struct ths7303_platform_data *pdata;
struct v4l2_bt_timings bt;
int std_id;
int stream_on;
@@ -89,7 +89,7 @@ int ths7303_setval(struct v4l2_subdev *sd, enum ths7303_filter_mode mode)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ths7303_state *state = to_state(sd);
- struct ths7303_platform_data *pdata = &state->pdata;
+ const struct ths7303_platform_data *pdata = state->pdata;
u8 val, sel = 0;
int err, disable = 0;
@@ -356,6 +356,11 @@ static int ths7303_probe(struct i2c_client *client,
struct ths7303_state *state;
struct v4l2_subdev *sd;
+ if (pdata == NULL) {
+ dev_err(&client->dev, "No platform data\n");
+ return -EINVAL;
+ }
+
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
@@ -367,11 +372,7 @@ static int ths7303_probe(struct i2c_client *client,
if (!state)
return -ENOMEM;
- if (!pdata)
- v4l_warn(client, "No platform data, using default data!\n");
- else
- state->pdata = *pdata;
-
+ state->pdata = pdata;
sd = &state->sd;
v4l2_i2c_subdev_init(sd, client, &ths7303_ops);