Based on kernel version 6.11
. Page generated on 2024-09-24 08:21 EST
.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | .. SPDX-License-Identifier: GPL-2.0 .. _GPIO_GET_LINEINFO_UNWATCH_IOCTL: ******************************* GPIO_GET_LINEINFO_UNWATCH_IOCTL ******************************* Name ==== GPIO_GET_LINEINFO_UNWATCH_IOCTL - Disable watching a line for changes to its requested state and configuration information. Synopsis ======== .. c:macro:: GPIO_GET_LINEINFO_UNWATCH_IOCTL ``int ioctl(int chip_fd, GPIO_GET_LINEINFO_UNWATCH_IOCTL, u32 *offset)`` Arguments ========= ``chip_fd`` The file descriptor of the GPIO character device returned by `open()`. ``offset`` The offset of the line to no longer watch. Description =========== Remove the line from the list of lines being watched on this ``chip_fd``. This is the reverse of gpio-v2-get-lineinfo-watch-ioctl.rst (v2) and gpio-get-lineinfo-watch-ioctl.rst (v1). Unwatching a line that is not watched is an error (**EBUSY**). First added in 5.7. Return Value ============ On success 0. On error -1 and the ``errno`` variable is set appropriately. Common error codes are described in error-codes.rst. |