diff options
| author | Paul Mackerras <paulus@samba.org> | 2006-08-01 10:37:25 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-08-01 10:37:25 +1000 |
| commit | 57cad8084e0837e0f2c97da789ec9b3f36809be9 (patch) | |
| tree | e9c790afb4286f78cb08d9664f58baa7e876fe55 /drivers/i2c/chips/pca9539.c | |
| parent | cb18bd40030c879cd93fef02fd579f74dbab473d (diff) | |
| parent | 49b1e3ea19b1c95c2f012b8331ffb3b169e4c042 (diff) | |
| download | kernel_samsung_smdk4412-57cad8084e0837e0f2c97da789ec9b3f36809be9.tar.gz kernel_samsung_smdk4412-57cad8084e0837e0f2c97da789ec9b3f36809be9.tar.bz2 kernel_samsung_smdk4412-57cad8084e0837e0f2c97da789ec9b3f36809be9.zip | |
Merge branch 'merge'
Diffstat (limited to 'drivers/i2c/chips/pca9539.c')
| -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 54b6e6a4bee..cb22280cdd2 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) new_client->driver = &pca9539_driver; new_client->flags = 0; - /* Detection: the pca9539 only has 8 registers (0-7). - A read of 7 should succeed, but a read of 8 should fail. */ - if ((i2c_smbus_read_byte_data(new_client, 7) < 0) || - (i2c_smbus_read_byte_data(new_client, 8) >= 0)) - goto exit_kfree; + if (kind < 0) { + /* Detection: the pca9539 only has 8 registers (0-7). + A read of 7 should succeed, but a read of 8 should fail. */ + if ((i2c_smbus_read_byte_data(new_client, 7) < 0) || + (i2c_smbus_read_byte_data(new_client, 8) >= 0)) + goto exit_kfree; + } strlcpy(new_client->name, "pca9539", I2C_NAME_SIZE); |