powerpc: qe_lib/gpio: Be sure to clamp return value
authorLinus Walleij <linus.walleij@linaro.org>
Mon, 21 Dec 2015 21:42:59 +0000 (22:42 +0100)
committerLinus Walleij <linus.walleij@linaro.org>
Mon, 25 Jan 2016 17:02:26 +0000 (18:02 +0100)
commite847396b40d07931f5d2835f73220e16a1a413b3
treea775a6e8be7ebeebd7c54883d1ed003a2c754c46
parenteecdf59ad2fb90d8238a42e2ec41f165964349bb
powerpc: qe_lib/gpio: Be sure to clamp return value

As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Anatolij Gustschin <agust@denx.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
drivers/soc/fsl/qe/gpio.c