Commits
Guido Kiener committed 739240a9f6a
usb: usbtmc: Add ioctl USBTMC488_IOCTL_WAIT_SRQ Wait until an SRQ (service request) is received on the interrupt pipe or until the given period of time is expired. In contrast to the poll() function this ioctl does not return when other (a)synchronous I/O operations fail with EPOLLERR. Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com> Reviewed-by: Steve Bayless <steve_bayless@keysight.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>