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Fix the "typical usage" example for enqueuing a request - if 

bus_dmamap_load(9) fails, we shouldn't call bus_dmamap_unload(9).
This commit is contained in:
uwe 2016-11-29 22:04:42 +00:00
parent 8834a805a6
commit 79b4afcbe7
1 changed files with 2 additions and 3 deletions
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5
sys/dev/pci/virtio.c
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@ -1,4 +1,4 @@
/* $NetBSD: virtio.c,v 1.18 2016/09/27 03:33:32 pgoyette Exp $ */
/* $NetBSD: virtio.c,v 1.19 2016/11/29 22:04:42 uwe Exp $ */
/*
* Copyright (c) 2010 Minoura Makoto.
@ -26,7 +26,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: virtio.c,v 1.18 2016/09/27 03:33:32 pgoyette Exp $");
__KERNEL_RCSID(0, "$NetBSD: virtio.c,v 1.19 2016/11/29 22:04:42 uwe Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -1018,7 +1018,6 @@ vq_free_entry(struct virtqueue *vq, struct vq_entry *qe)
* r = bus_dmamap_load(dmat, dmamap_payload[slot], data, count, ..);
* if (r) {
* virtio_enqueue_abort(sc, vq, slot);
* bus_dmamap_unload(dmat, dmamap_payload[slot]);
* return r;
* }
* r = virtio_enqueue_reserve(sc, vq, slot,