/dev/usbN devices no longer support poll as of 2011 when "USB

events" were ripped out, so remove the sentence about monitoring for
USB device attachment to avoid filling developers with hope only to
crush their spirit when they implement the poll code only to find
out it doesn't do anything at all.

diff --git a/share/man/man4/usb.4 b/share/man/man4/usb.4
index 30e6e7f..40b4b55 100644 (file)
--- a/share/man/man4/usb.4
+++ b/share/man/man4/usb.4
@@ -1,4 +1,4 @@
-.\"    $OpenBSD: usb.4,v 1.189 2018/08/25 20:31:31 jcs Exp $
+.\"    $OpenBSD: usb.4,v 1.190 2018/08/30 03:26:08 jcs Exp $
 .\"    $NetBSD: usb.4,v 1.15 1999/07/29 14:20:32 augustss Exp $
 .\"
 .\" Copyright (c) 1999 The NetBSD Foundation, Inc.
@@ -28,7 +28,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: August 25 2018 $
+.Dd $Mdocdate: August 30 2018 $
 .Dt USB 4
 .Os
 .Sh NAME
@@ -387,11 +387,6 @@ and defines:
 The
 .Pa /dev/usbN
 device can be opened and a few operations can be performed on it.
-The
-.Xr poll 2
-system call will say that I/O is possible on the controller device
-when a USB device has been connected or disconnected to the bus.
-.Pp
 The following
 .Xr ioctl 2
 commands are supported on the controller device: