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| author | Tin Huynh <tnhuynh@apm.com> | 2017-05-22 16:19:20 +0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-13 19:48:03 +0200 |
| commit | 1a53869c4c3406d841093c8e5e0649e5f6de80ac (patch) | |
| tree | bc9e045cfad2a8013c104c6a48422899c365ca1c | |
| parent | 69f4dd14771cad36c38640ff3f5c537bc6b97762 (diff) | |
| download | linux-stable-1a53869c4c3406d841093c8e5e0649e5f6de80ac.tar.gz linux-stable-1a53869c4c3406d841093c8e5e0649e5f6de80ac.tar.bz2 linux-stable-1a53869c4c3406d841093c8e5e0649e5f6de80ac.zip | |
leds: pca955x: Correct I2C Functionality
[ Upstream commit aace34c0bb8ea3c8bdcec865b6a4be4db0a68e33 ]
The driver checks an incorrect flag of functionality of adapter.
When a driver requires i2c_smbus_read_byte_data and
i2c_smbus_write_byte_data, it should check I2C_FUNC_SMBUS_BYTE_DATA
instead I2C_FUNC_I2C.
This patch fixes the problem.
Signed-off-by: Tin Huynh <tnhuynh@apm.com>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/leds/leds-pca955x.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/leds/leds-pca955x.c b/drivers/leds/leds-pca955x.c index 840401ae9a4e..f6726484a8a1 100644 --- a/drivers/leds/leds-pca955x.c +++ b/drivers/leds/leds-pca955x.c @@ -266,7 +266,7 @@ static int pca955x_probe(struct i2c_client *client, "slave address 0x%02x\n", id->name, chip->bits, client->addr); - if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) return -EIO; if (pdata) { |