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Subject[PATCH 4.4 061/190] leds: pca955x: Correct I2C Functionality
Date
4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

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
@@ -281,7 +281,7 @@ 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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