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Date: Wed, 13 Jan 2016 19:40:02 +0800
From: kbuild test robot <lkp@...el.com>
To: Martin Kepplinger <martink@...teo.de>
Cc: kbuild-all@...org, jic23@...nel.org, knaack.h@....de,
lars@...afoo.de, pmeerw@...erw.net,
christoph.muellner@...obroma-systems.com, mfuzzey@...keon.com,
linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
Martin Kepplinger <martink@...teo.de>,
Martin Kepplinger <martin.kepplinger@...obroma-systems.com>
Subject: Re: [PATCH v3] iio: mma8452: add freefall detection for Freescale's
accelerometers
Hi Martin,
[auto build test WARNING on next-20160113]
[cannot apply to v4.4-rc8 v4.4-rc7 v4.4-rc6 v4.4]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]
url: https://github.com/0day-ci/linux/commits/Martin-Kepplinger/iio-mma8452-add-freefall-detection-for-Freescale-s-accelerometers/20160113-192756
config: x86_64-randconfig-x015-01110856 (attached as .config)
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64
All warnings (new ones prefixed by >>):
In file included from include/uapi/linux/stddef.h:1:0,
from include/linux/stddef.h:4,
from include/uapi/linux/posix_types.h:4,
from include/uapi/linux/types.h:13,
from include/linux/types.h:5,
from include/linux/list.h:4,
from include/linux/module.h:9,
from drivers/iio/accel/mma8452.c:21:
drivers/iio/accel/mma8452.c: In function 'mma8452_write_event_config':
drivers/iio/accel/mma8452.c:682:15: warning: the address of 'mma8452_freefall_mode_enabled' will always evaluate as 'true' [-Waddress]
if ((!state && mma8452_freefall_mode_enabled) ||
^
include/linux/compiler.h:147:28: note: in definition of macro '__trace_if'
if (__builtin_constant_p((cond)) ? !!(cond) : \
^
>> drivers/iio/accel/mma8452.c:682:3: note: in expansion of macro 'if'
if ((!state && mma8452_freefall_mode_enabled) ||
^
drivers/iio/accel/mma8452.c:683:17: warning: the address of 'mma8452_freefall_mode_enabled' will always evaluate as 'true' [-Waddress]
(state && !mma8452_freefall_mode_enabled))
^
include/linux/compiler.h:147:28: note: in definition of macro '__trace_if'
if (__builtin_constant_p((cond)) ? !!(cond) : \
^
>> drivers/iio/accel/mma8452.c:682:3: note: in expansion of macro 'if'
if ((!state && mma8452_freefall_mode_enabled) ||
^
drivers/iio/accel/mma8452.c:682:15: warning: the address of 'mma8452_freefall_mode_enabled' will always evaluate as 'true' [-Waddress]
if ((!state && mma8452_freefall_mode_enabled) ||
^
include/linux/compiler.h:147:40: note: in definition of macro '__trace_if'
if (__builtin_constant_p((cond)) ? !!(cond) : \
^
>> drivers/iio/accel/mma8452.c:682:3: note: in expansion of macro 'if'
if ((!state && mma8452_freefall_mode_enabled) ||
^
drivers/iio/accel/mma8452.c:683:17: warning: the address of 'mma8452_freefall_mode_enabled' will always evaluate as 'true' [-Waddress]
(state && !mma8452_freefall_mode_enabled))
^
include/linux/compiler.h:147:40: note: in definition of macro '__trace_if'
if (__builtin_constant_p((cond)) ? !!(cond) : \
^
>> drivers/iio/accel/mma8452.c:682:3: note: in expansion of macro 'if'
if ((!state && mma8452_freefall_mode_enabled) ||
^
drivers/iio/accel/mma8452.c:682:15: warning: the address of 'mma8452_freefall_mode_enabled' will always evaluate as 'true' [-Waddress]
if ((!state && mma8452_freefall_mode_enabled) ||
^
include/linux/compiler.h:158:16: note: in definition of macro '__trace_if'
______r = !!(cond); \
^
>> drivers/iio/accel/mma8452.c:682:3: note: in expansion of macro 'if'
if ((!state && mma8452_freefall_mode_enabled) ||
^
drivers/iio/accel/mma8452.c:683:17: warning: the address of 'mma8452_freefall_mode_enabled' will always evaluate as 'true' [-Waddress]
(state && !mma8452_freefall_mode_enabled))
^
include/linux/compiler.h:158:16: note: in definition of macro '__trace_if'
______r = !!(cond); \
^
>> drivers/iio/accel/mma8452.c:682:3: note: in expansion of macro 'if'
if ((!state && mma8452_freefall_mode_enabled) ||
^
vim +/if +682 drivers/iio/accel/mma8452.c
666 return -EINVAL;
667 }
668 }
669
670 static int mma8452_write_event_config(struct iio_dev *indio_dev,
671 const struct iio_chan_spec *chan,
672 enum iio_event_type type,
673 enum iio_event_direction dir,
674 int state)
675 {
676 struct mma8452_data *data = iio_priv(indio_dev);
677 const struct mma_chip_info *chip = data->chip_info;
678 int val;
679
680 switch (dir) {
681 case IIO_EV_DIR_FALLING:
> 682 if ((!state && mma8452_freefall_mode_enabled) ||
683 (state && !mma8452_freefall_mode_enabled))
684 return mma8452_set_freefall_mode(data, state);
685 else
686 return 0;
687 case IIO_EV_DIR_RISING:
688 val = i2c_smbus_read_byte_data(data->client, chip->ev_cfg);
689 if (val < 0)
690 return val;
---
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