svn commit: r338458 - head/sys/dev/usb/input

[Vladimir Kondratyev]

Author: wulf
Date: Tue Sep  4 19:22:31 2018
New Revision: 338458
URL: https://svnweb.freebsd.org/changeset/base/338458

Log:
  wmt(4): Fix regression introduced in r337289
  
  r337289 has a side effect of reducing usb frame 0 buffer size down to
  touch report size. That broke some devices e.g. "Raydium Touch System"
  which are capable of generating non-touch frames of bigger length.
  Fix it with enlarging frame 0 buffer up to internal wmt(4) buffer size.
  
  Reported by:	Roberto Fernandez Cueto <roberfern at gmail.com>
  Tested by:	Roberto Fernandez Cueto <roberfern at gmail.com>
  Approved by:	re (gjb)
  MFC after:	2 weeks
  Differential Revision:	https://reviews.freebsd.org/D16772

Modified:
  head/sys/dev/usb/input/wmt.c

Modified: head/sys/dev/usb/input/wmt.c
==============================================================================
--- head/sys/dev/usb/input/wmt.c	Tue Sep  4 19:18:55 2018	(r338457)
+++ head/sys/dev/usb/input/wmt.c	Tue Sep  4 19:22:31 2018	(r338458)
@@ -521,7 +521,7 @@ tr_ignore:
 
 	case USB_ST_SETUP:
 tr_setup:
-		usbd_xfer_set_frame_len(xfer, 0, sc->isize);
+		usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
 		usbd_transfer_submit(xfer);
 		break;
 	default: