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    SubjectRe: [PATCH] cs5535_gpio: gpio_chip.get should return the input value
    >> --- linux-2.6.33-rc8.orig/drivers/gpio/cs5535-gpio.c
    >> +++ linux-2.6.33-rc8/drivers/gpio/cs5535-gpio.c
    >> @@ -154,7 +154,7 @@
    >>  static int chip_gpio_get(struct gpio_chip *chip, unsigned offset)
    >>  {
    >> -     return cs5535_gpio_isset(offset, GPIO_OUTPUT_VAL);
    >> +     return cs5535_gpio_isset(offset, GPIO_READ_BACK);
    >>  }
    >>  static void chip_gpio_set(struct gpio_chip *chip, unsigned offset, int val)
    > <presses F10>
    > What were the user-visible effects of this bug?

    The user-visible effects were that the input didn't work.
    I use the CS5535 chip in a custom board that uses GPIO 25 and 26 as
    voltage monitoring inputs (external voltage comparators).
    Since the char-based cs5535-gpio is now deprecated, I'm trying out the
    gpio driver.
    I export the GPIO pins via sysfs to access them from user-space.
    Reading the 'value' member didn't reflect the input.

    Personally, I would prefer a separate sysfs entry for the output and
    the input, since the GPIO pins can be both outputs and inputs, but
    that would require a gpiolib change.
    Since there doesn't appear to be a gpio maintainer, any change to that
    might be tricky.

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      Last update: 2010-02-25 04:55    [W:0.021 / U:215.636 seconds]
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