diff options
Diffstat (limited to 'drivers/i2c/chips')
| -rw-r--r-- | drivers/i2c/chips/pca9539.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/i2c/chips/pca9539.c b/drivers/i2c/chips/pca9539.c index 54b6e6a4beed..cb22280cdd27 100644 --- a/drivers/i2c/chips/pca9539.c +++ b/drivers/i2c/chips/pca9539.c | |||
| @@ -134,11 +134,13 @@ static int pca9539_detect(struct i2c_adapter *adapter, int address, int kind) | |||
| 134 | new_client->driver = &pca9539_driver; | 134 | new_client->driver = &pca9539_driver; |
| 135 | new_client->flags = 0; | 135 | new_client->flags = 0; |
| 136 | 136 | ||
| 137 | /* Detection: the pca9539 only has 8 registers (0-7). | 137 | if (kind < 0) { |
| 138 | A read of 7 should succeed, but a read of 8 should fail. */ | 138 | /* Detection: the pca9539 only has 8 registers (0-7). |
| 139 | if ((i2c_smbus_read_byte_data(new_client, 7) < 0) || | 139 | A read of 7 should succeed, but a read of 8 should fail. */ |
| 140 | (i2c_smbus_read_byte_data(new_client, 8) >= 0)) | 140 | if ((i2c_smbus_read_byte_data(new_client, 7) < 0) || |
| 141 | goto exit_kfree; | 141 | (i2c_smbus_read_byte_data(new_client, 8) >= 0)) |
| 142 | goto exit_kfree; | ||
| 143 | } | ||
| 142 | 144 | ||
| 143 | strlcpy(new_client->name, "pca9539", I2C_NAME_SIZE); | 145 | strlcpy(new_client->name, "pca9539", I2C_NAME_SIZE); |
| 144 | 146 | ||