tree 7cfd6a2641b7d7f5a616d5a4d346fbbb164eb59e
parent 374b105797c3d4f29c685f3be535c35f5689b30e
author José Miguel Gonçalves <jose.goncalves@inov.pt> 1386760273 +0000
committer Guenter Roeck <linux@roeck-us.net> 1386797850 -0800

hwmon: HIH-6130: Support I2C bus drivers without I2C_FUNC_SMBUS_QUICK

Some I2C bus drivers do not allow zero-length data transfers which are
required to start a measurement with the HIH6130/1 sensor. Nevertheless,
we can overcome this limitation by writing a zero dummy byte. This byte
is ignored by the sensor and was verified to be working with the OMAP
I2C bus driver in a BeagleBone board.

Signed-off-by: José Miguel Gonçalves <jose.goncalves@inov.pt>
[Guenter Roeck: Simplified complexity of write_length initialization]
Cc: stable@vger.kernel.org # v3.10+
Signed-off-by: Guenter Roeck <linux@roeck-us.net>