diff options
| -rw-r--r-- | drivers/input/mouse/elan_i2c_smbus.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/drivers/input/mouse/elan_i2c_smbus.c b/drivers/input/mouse/elan_i2c_smbus.c index cb6aecbc1dc2..e23b2495d52e 100644 --- a/drivers/input/mouse/elan_i2c_smbus.c +++ b/drivers/input/mouse/elan_i2c_smbus.c @@ -222,11 +222,13 @@ static int elan_smbus_get_checksum(struct i2c_client *client, static int elan_smbus_get_max(struct i2c_client *client, unsigned int *max_x, unsigned int *max_y) { + int ret; int error; u8 val[3]; - error = i2c_smbus_read_block_data(client, ETP_SMBUS_RANGE_CMD, val); - if (error) { + ret = i2c_smbus_read_block_data(client, ETP_SMBUS_RANGE_CMD, val); + if (ret != 3) { + error = ret < 0 ? ret : -EIO; dev_err(&client->dev, "failed to get dimensions: %d\n", error); return error; } @@ -240,12 +242,13 @@ static int elan_smbus_get_max(struct i2c_client *client, static int elan_smbus_get_resolution(struct i2c_client *client, u8 *hw_res_x, u8 *hw_res_y) { + int ret; int error; u8 val[3]; - error = i2c_smbus_read_block_data(client, - ETP_SMBUS_RESOLUTION_CMD, val); - if (error) { + ret = i2c_smbus_read_block_data(client, ETP_SMBUS_RESOLUTION_CMD, val); + if (ret != 3) { + error = ret < 0 ? ret : -EIO; dev_err(&client->dev, "failed to get resolution: %d\n", error); return error; } @@ -260,12 +263,13 @@ static int elan_smbus_get_num_traces(struct i2c_client *client, unsigned int *x_traces, unsigned int *y_traces) { + int ret; int error; u8 val[3]; - error = i2c_smbus_read_block_data(client, - ETP_SMBUS_XY_TRACENUM_CMD, val); - if (error) { + ret = i2c_smbus_read_block_data(client, ETP_SMBUS_XY_TRACENUM_CMD, val); + if (ret != 3) { + error = ret < 0 ? ret : -EIO; dev_err(&client->dev, "failed to get trace info: %d\n", error); return error; } |