| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 091/310] leds: pca955x: Correct I2C Functionality | Date | Wed, 11 Apr 2018 20:33:50 +0200 |
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4.9-stable review patch. If anyone has any objections, please let me know.
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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) {
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