Add a CONTEXT section.

1 files changed, 14 insertions, 5 deletions

diff --git a/share/man/man9/usbd_transfer.9 b/share/man/man9/usbd_transfer.9
index 8d34bc54db7..f3b83f7ac10 100644
--- a/share/man/man9/usbd_transfer.9
+++ b/share/man/man9/usbd_transfer.9
@@ -1,4 +1,4 @@
-.\" $OpenBSD: usbd_transfer.9,v 1.1 2013/09/20 15:34:52 mpi Exp $
+.\" $OpenBSD: usbd_transfer.9,v 1.2 2014/03/26 14:25:35 mpi Exp $
 .\"
 .\" Copyright (c) 2013 Martin Pieuchot
 .\"
@@ -14,7 +14,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: September 20 2013 $
+.Dd $Mdocdate: March 26 2014 $
 .Dt USBD_TRANSFER 9
 .Os
 .Sh NAME
@@ -94,9 +94,18 @@ is used to submit the USB transfer described by
 to the corresponding
 .Xr usb 4
 host controller to perform I/O with devices.
-.Sh CODE REFERENCES
-These functions are implemented in the file
-.Pa sys/dev/usb/usbdi.c .
+.Sh CONTEXT
+.Fn usbd_setup_xfer
+can be called during autoconf, from process context, or from interrupt context.
+.Pp
+.Fn usbd_transfer
+can be called during autoconf, or from process context if
+.Dv USBD_SYNCHRONOUS
+has been passed via
+.Fa flags
+when initializing
+.Fa xfer ,
+or during autoconf, from process context, or from interrupt context otherwise.
 .Sh SEE ALSO
 .Xr ehci 4 ,
 .Xr ohci 4 ,