diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/dvb-frontends/tda10071.c | 12 | ||||
| -rw-r--r-- | drivers/media/dvb-frontends/tda10071_priv.h | 1 |
2 files changed, 10 insertions, 3 deletions
diff --git a/drivers/media/dvb-frontends/tda10071.c b/drivers/media/dvb-frontends/tda10071.c index 6226b579a440..84fb559e7b3d 100644 --- a/drivers/media/dvb-frontends/tda10071.c +++ b/drivers/media/dvb-frontends/tda10071.c @@ -61,25 +61,28 @@ static int tda10071_cmd_execute(struct tda10071_dev *dev, goto error; } + mutex_lock(&dev->cmd_execute_mutex); + /* write cmd and args for firmware */ ret = regmap_bulk_write(dev->regmap, 0x00, cmd->args, cmd->len); if (ret) - goto error; + goto error_mutex_unlock; /* start cmd execution */ ret = regmap_write(dev->regmap, 0x1f, 1); if (ret) - goto error; + goto error_mutex_unlock; /* wait cmd execution terminate */ for (i = 1000, uitmp = 1; i && uitmp; i--) { ret = regmap_read(dev->regmap, 0x1f, &uitmp); if (ret) - goto error; + goto error_mutex_unlock; usleep_range(200, 5000); } + mutex_unlock(&dev->cmd_execute_mutex); dev_dbg(&client->dev, "loop=%d\n", i); if (i == 0) { @@ -88,6 +91,8 @@ static int tda10071_cmd_execute(struct tda10071_dev *dev, } return ret; +error_mutex_unlock: + mutex_unlock(&dev->cmd_execute_mutex); error: dev_dbg(&client->dev, "failed=%d\n", ret); return ret; @@ -1167,6 +1172,7 @@ static int tda10071_probe(struct i2c_client *client, } dev->client = client; + mutex_init(&dev->cmd_execute_mutex); dev->clk = pdata->clk; dev->i2c_wr_max = pdata->i2c_wr_max; dev->ts_mode = pdata->ts_mode; diff --git a/drivers/media/dvb-frontends/tda10071_priv.h b/drivers/media/dvb-frontends/tda10071_priv.h index 30143c8f8bb8..cf5b43337136 100644 --- a/drivers/media/dvb-frontends/tda10071_priv.h +++ b/drivers/media/dvb-frontends/tda10071_priv.h @@ -30,6 +30,7 @@ struct tda10071_dev { struct dvb_frontend fe; struct i2c_client *client; struct regmap *regmap; + struct mutex cmd_execute_mutex; u32 clk; u16 i2c_wr_max; u8 ts_mode; |