Re: [PATCH 08/14] Input: adxl34x - fix gcc-7 -Wint-in-bool-context warning

[Arnd Bergmann]

On Fri, Jul 14, 2017 at 9:24 PM, Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
> On Fri, Jul 14, 2017 at 2:25 AM, Arnd Bergmann <arnd@xxxxxxxx> wrote:
>> FIFO_MODE is an macro expression with a '<<' operator, which
>> gcc points out could be misread as a '<':
>
> Yeah, no, NAK again.
>
> We don't make the code look worse just because gcc is being a f*cking
> moron about things.
>
> This warning is clearly pure garbage.
>

I looked at this one again and found a better approach, matching the
check that is done a few lines later. Unless you find something wrong
with that one, I'd resubmit it with the fixup below.

      Arnd

--- a/drivers/input/misc/adxl34x.c
+++ b/drivers/input/misc/adxl34x.c
@@ -789,21 +789,21 @@ struct adxl34x *adxl34x_probe(struct device *dev, int irq,
                __set_bit(pdata->ev_code_ff, input_dev->keybit);
        }

        if (pdata->ev_code_act_inactivity)
                __set_bit(pdata->ev_code_act_inactivity, input_dev->keybit);

        ac->int_mask |= ACTIVITY | INACTIVITY;

        if (pdata->watermark) {
                ac->int_mask |= WATERMARK;
-               if (FIFO_MODE(pdata->fifo_mode) == 0)
+               if (FIFO_MODE(pdata->fifo_mode) == FIFO_BYPASS)
                        ac->pdata.fifo_mode |= FIFO_STREAM;
        } else {
                ac->int_mask |= DATA_READY;
        }

        if (pdata->tap_axis_control & (TAP_X_EN | TAP_Y_EN | TAP_Z_EN))
                ac->int_mask |= SINGLE_TAP | DOUBLE_TAP;

        if (FIFO_MODE(pdata->fifo_mode) == FIFO_BYPASS)
                ac->fifo_delay = false;