diff options
| author | Ben Gardner | 2006-07-01 17:22:18 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2006-07-13 00:43:07 +0200 |
| commit | 50436a47c6b10c6e4e84e24ea44c5cb85bbcd290 (patch) | |
| tree | 5271b0ec88589406debc578148f946da82f8aca4 /drivers/i2c | |
| parent | [PATCH] i2c-algo-bit: Wipe out dead code (diff) | |
| download | kernel-qcow2-linux-50436a47c6b10c6e4e84e24ea44c5cb85bbcd290.tar.gz kernel-qcow2-linux-50436a47c6b10c6e4e84e24ea44c5cb85bbcd290.tar.xz kernel-qcow2-linux-50436a47c6b10c6e4e84e24ea44c5cb85bbcd290.zip | |
[PATCH] pca9539: Honor the force parameter
The pca9539 driver doesn't honor the force parameter; it always does
detection. This patch will skip detection if forced.
Signed-off-by: Ben Gardner <gardner.ben@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/i2c')
| -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) 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); |