1.. SPDX-License-Identifier: GPL-2.0 2 3.. _GPIO_GET_LINEINFO_UNWATCH_IOCTL: 4 5******************************* 6GPIO_GET_LINEINFO_UNWATCH_IOCTL 7******************************* 8 9Name 10==== 11 12GPIO_GET_LINEINFO_UNWATCH_IOCTL - Disable watching a line for changes to its 13requested state and configuration information. 14 15Synopsis 16======== 17 18.. c:macro:: GPIO_GET_LINEINFO_UNWATCH_IOCTL 19 20``int ioctl(int chip_fd, GPIO_GET_LINEINFO_UNWATCH_IOCTL, u32 *offset)`` 21 22Arguments 23========= 24 25``chip_fd`` 26 The file descriptor of the GPIO character device returned by `open()`. 27 28``offset`` 29 The offset of the line to no longer watch. 30 31Description 32=========== 33 34Remove the line from the list of lines being watched on this ``chip_fd``. 35 36This is the reverse of gpio-v2-get-lineinfo-watch-ioctl.rst (v2) and 37gpio-get-lineinfo-watch-ioctl.rst (v1). 38 39Unwatching a line that is not watched is an error (**EBUSY**). 40 41First added in 5.7. 42 43Return Value 44============ 45 46On success 0. 47 48On error -1 and the ``errno`` variable is set appropriately. 49Common error codes are described in error-codes.rst. 50