greybus: gpio: refuse to set value of input pins

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Add warning and refuse to set output value for pin configured as input,
as the result of such an operation is undefined.

Remove incorrect todo-comment suggesting that the driver could
implicitly switch direction as part of the call.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

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Johan Hovold 2015-03-19 16:55:22 +01:00 • committed by Greg Kroah-Hartman

parent 64d2f4e5f9

commit 7bfa078140

1 changed files with 7 additions and 3 deletions

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drivers/staging/greybus/gpio.c

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