BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: Linux Memory Management List <linux-mm@kvack.org>
TO: "Nuno Sá" <nuno.sa@analog.com>
CC: Jonathan Cameron <Jonathan.Cameron@huawei.com>
CC: Andy Shevchenko <andy.shevchenko@gmail.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   147307c69ba4441ee90c1f8ce8edf5df4ea60f67
commit: e6dad5edfb8c00027d3ce004e0dab76f70bb9132 [4428/8929] iio: core: introduce iio_device_{claim|release}_buffer_mode() APIs
:::::: branch date: 11 hours ago
:::::: commit date: 2 weeks ago
config: parisc-randconfig-c004-20221118
compiler: hppa-linux-gcc (GCC) 12.1.0

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Julia Lawall <julia.lawall@lip6.fr>

cocci warnings: (new ones prefixed by >>)
>> drivers/iio/industrialio-core.c:2102:2-8: preceding lock on line 2099

vim +2102 drivers/iio/industrialio-core.c

08a33805518e78 Alison Schofield 2016-03-09  2085  
e6dad5edfb8c00 Nuno Sá          2022-10-12  2086  /**
e6dad5edfb8c00 Nuno Sá          2022-10-12  2087   * iio_device_claim_buffer_mode - Keep device in buffer mode
e6dad5edfb8c00 Nuno Sá          2022-10-12  2088   * @indio_dev:	the iio_dev associated with the device
e6dad5edfb8c00 Nuno Sá          2022-10-12  2089   *
e6dad5edfb8c00 Nuno Sá          2022-10-12  2090   * If the device is in buffer mode it is guaranteed to stay
e6dad5edfb8c00 Nuno Sá          2022-10-12  2091   * that way until iio_device_release_buffer_mode() is called.
e6dad5edfb8c00 Nuno Sá          2022-10-12  2092   *
e6dad5edfb8c00 Nuno Sá          2022-10-12  2093   * Use with iio_device_release_buffer_mode().
e6dad5edfb8c00 Nuno Sá          2022-10-12  2094   *
e6dad5edfb8c00 Nuno Sá          2022-10-12  2095   * Returns: 0 on success, -EBUSY on failure.
e6dad5edfb8c00 Nuno Sá          2022-10-12  2096   */
e6dad5edfb8c00 Nuno Sá          2022-10-12  2097  int iio_device_claim_buffer_mode(struct iio_dev *indio_dev)
e6dad5edfb8c00 Nuno Sá          2022-10-12  2098  {
e6dad5edfb8c00 Nuno Sá          2022-10-12 @2099  	mutex_lock(&indio_dev->mlock);
e6dad5edfb8c00 Nuno Sá          2022-10-12  2100  
e6dad5edfb8c00 Nuno Sá          2022-10-12  2101  	if (iio_buffer_enabled(indio_dev))
e6dad5edfb8c00 Nuno Sá          2022-10-12 @2102  		return 0;
e6dad5edfb8c00 Nuno Sá          2022-10-12  2103  
e6dad5edfb8c00 Nuno Sá          2022-10-12  2104  	mutex_unlock(&indio_dev->mlock);
e6dad5edfb8c00 Nuno Sá          2022-10-12  2105  	return -EBUSY;
e6dad5edfb8c00 Nuno Sá          2022-10-12  2106  }
e6dad5edfb8c00 Nuno Sá          2022-10-12  2107  EXPORT_SYMBOL_GPL(iio_device_claim_buffer_mode);
e6dad5edfb8c00 Nuno Sá          2022-10-12  2108  

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