i2c: add param sanity check to i2c_transfer()

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The API docs describe i2c_transfer() as taking a pointer to an array
of i2c_msg containing at least 1 entry, but leaves it to the individual
drivers to sanity check the msgs and num parameters. Let's do this in
core code instead.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
[wsa: changed '<= 0' to '< 1']
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

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Ard Biesheuvel 2018-04-03 21:11:50 +02:00 • committed by Wolfram Sang

parent 090cecc669

commit 1eace8344c

1 changed files with 3 additions and 0 deletions

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drivers/i2c/i2c-core-base.c

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