| From foo@baz Mon Apr 9 17:09:24 CEST 2018 |
| From: Tin Huynh <tnhuynh@apm.com> |
| Date: Mon, 22 May 2017 16:19:20 +0700 |
| Subject: leds: pca955x: Correct I2C Functionality |
| |
| From: Tin Huynh <tnhuynh@apm.com> |
| |
| |
| [ 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> |
| --- |
| drivers/leds/leds-pca955x.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/drivers/leds/leds-pca955x.c |
| +++ b/drivers/leds/leds-pca955x.c |
| @@ -266,7 +266,7 @@ static int pca955x_probe(struct i2c_clie |
| "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) { |