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authoraugustss <augustss@NetBSD.org>2001-12-12 15:38:58 +0000
committeraugustss <augustss@NetBSD.org>2001-12-12 15:38:58 +0000
commit2fdd0f5a4b3245394ad26aa61bcb664e58d14e95 (patch)
tree212722c75c870708632549e518edee11dd388b66 /sys/dev
parent29c3fe261ba088715d8f7239152269c226b0b46a (diff)
Some more paranoia checks when DIAGNOSTIC.
Diffstat (limited to 'sys/dev')
-rw-r--r--sys/dev/usb/usbdi.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/sys/dev/usb/usbdi.c b/sys/dev/usb/usbdi.c
index bdf2264a80e..30c31043e3b 100644
--- a/sys/dev/usb/usbdi.c
+++ b/sys/dev/usb/usbdi.c
@@ -1,4 +1,4 @@
-/* $NetBSD: usbdi.c,v 1.91 2001/12/12 15:23:59 augustss Exp $ */
+/* $NetBSD: usbdi.c,v 1.92 2001/12/12 15:38:58 augustss Exp $ */
/* $FreeBSD: src/sys/dev/usb/usbdi.c,v 1.28 1999/11/17 22:33:49 n_hibma Exp $ */
/*
@@ -39,7 +39,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: usbdi.c,v 1.91 2001/12/12 15:23:59 augustss Exp $");
+__KERNEL_RCSID(0, "$NetBSD: usbdi.c,v 1.92 2001/12/12 15:38:58 augustss Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -361,9 +361,13 @@ usbd_alloc_buffer(usbd_xfer_handle xfer, u_int32_t size)
struct usbd_bus *bus = xfer->device->bus;
usbd_status err;
+#ifdef DIAGNOSTIC
+ if (xfer->rqflags & (URQ_DEV_DMABUF | URQ_AUTO_DMABUF))
+ printf("usbd_alloc_buffer: xfer already has a buffer\n");
+#endif
err = bus->methods->allocm(bus, &xfer->dmabuf, size);
if (err)
- return (0);
+ return (NULL);
xfer->rqflags |= URQ_DEV_DMABUF;
return (KERNADDR(&xfer->dmabuf));
}