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7f1e45f4ae
In legacy sysfs GPIO, when using poll(2) on the sysfs GPIO value for state change awaiting, a subsequent read(2) is required for consuming the event, which the doc recommends the use of lseek(2) or close-and-reopen to reset the file offset afterwards. The recommendations however, require at least 2 syscalls to consume the event. Gladly, use of pread(2) require only 1 syscall for the consumption. Let's advertise this usage by prioritizing its placement. Signed-off-by: Huichun Feng <foxhoundsk.tw@gmail.com> Link: https://lore.kernel.org/r/20240609173728.2950808-1-foxhoundsk.tw@gmail.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>