Lines Matching +full:buffer +full:- +full:size

1 .. SPDX-License-Identifier: GPL-2.0
11     gpio-v2-line-event-read.rst.
16 GPIO_LINEEVENT_DATA_READ - Read edge detection events from a line event.
28     :c:type:`request.fd<gpioevent_request>` by gpio-get-lineevent-ioctl.rst.
31     The buffer to contain the :c:type:`events<gpioevent_data>`.
35     least the size of a :c:type:`gpioevent_data`.
53 occurrence and stores them in a buffer from where they can be read by
62 Events read from the buffer are always in the same order that they were
65 The size of the kernel event buffer is fixed at 16 events.
67 The buffer may overflow if bursts of events occur quicker than they are read
73 copied is the lower of the number available in the kernel buffer and the
74 number that will fit in the userspace buffer (``buf``).
85 On success the number of bytes read, which will be a multiple of the size of
88 On error -1 and the ``errno`` variable is set appropriately.
89 Common error codes are described in error-codes.rst.