i2c: introduce helper function to get 8 bit address from a message

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Drivers do this in various ways, let's use one standard way of doing it.
Note: I2C_M_RD is bit 0, so the code could be simplified. To be extremly
robust and to advertise good coding practices, I still use the ternary
operator and let the compilers do the optimizing job.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

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Wolfram Sang 2016-04-03 20:44:45 +02:00

parent e28b124564

commit a16d6ebca6

1 changed files with 5 additions and 0 deletions

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include/linux/i2c.h

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