svn commit: r213525 - user/weongyo/usb/sys/dev/usb
Weongyo Jeong
weongyo at FreeBSD.org
Thu Oct 7 17:49:20 UTC 2010
Author: weongyo
Date: Thu Oct 7 17:49:19 2010
New Revision: 213525
URL: http://svn.freebsd.org/changeset/base/213525
Log:
Enhances a comment what xfer_setup is really doing.
Modified:
user/weongyo/usb/sys/dev/usb/usb_transfer.c
Modified: user/weongyo/usb/sys/dev/usb/usb_transfer.c
==============================================================================
--- user/weongyo/usb/sys/dev/usb/usb_transfer.c Thu Oct 7 17:35:10 2010 (r213524)
+++ user/weongyo/usb/sys/dev/usb/usb_transfer.c Thu Oct 7 17:49:19 2010 (r213525)
@@ -799,8 +799,9 @@ usbd_transfer_setup(struct usb_device *u
parm.curr_xfer = xfer;
/*
- * Call the Host or Device controller transfer
- * setup routine:
+ * Call the Host or Device controller transfer setup routine
+ * that at this point it'd calculate the buffer size only
+ * because parm->buf is NULL.
*/
(udev->bus->methods->xfer_setup) (&parm);
if (parm.err)
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