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Add a sanity check to the computed actual transfer length.

This commit is contained in:
augustss 1999-09-15 21:08:59 +00:00
parent d4f0eac72e
commit 5260cadff2
1 changed files with 10 additions and 2 deletions
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12
sys/dev/usb/usbdi.c
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@ -1,4 +1,4 @@
/* $NetBSD: usbdi.c,v 1.42 1999/09/15 14:17:15 augustss Exp $ */
/* $NetBSD: usbdi.c,v 1.43 1999/09/15 21:08:59 augustss Exp $ */
/*
* Copyright (c) 1998 The NetBSD Foundation, Inc.
@ -743,8 +743,16 @@ usb_transfer_complete(reqh)
pipe->running = 0;
if (!(reqh->flags & USBD_NO_COPY) && reqh->actlen != 0 &&
usbd_reqh_isread(reqh))
usbd_reqh_isread(reqh)) {
#ifdef DIAGNOSTIC
if (reqh->actlen > reqh->length) {
printf("usb_transfer_complete: actlen > len %d > %d\n",
reqh->actlen, reqh->length);
reqh->actlen = reqh->length;
}
#endif
memcpy(reqh->buffer, KERNADDR(dmap), reqh->actlen);
}
/* if we allocated the buffer in usbd_transfer() we free it here. */
if (reqh->rqflags & URQ_AUTO_DMABUF) {