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authorMichael S. Tsirkin <mst@redhat.com>2010-06-24 16:59:59 +0300
committerMichael S. Tsirkin <mst@redhat.com>2010-06-27 11:52:25 +0300
commitd5675bd204efd87a174eeea592de23c4c4e7f908 (patch)
tree11ec7e455d21285da68fa7db40af07ebf45f9d0e /drivers/vhost/vhost.h
parent38000a94a902e94ca8b5498f7871c6316de8957a (diff)
downloadop-kernel-dev-d5675bd204efd87a174eeea592de23c4c4e7f908.zip
op-kernel-dev-d5675bd204efd87a174eeea592de23c4c4e7f908.tar.gz
vhost: break out of polling loop on error
When ring parsing fails, we currently handle this as ring empty condition. This means that we enable kicks and recheck ring empty: if this not empty, we re-start polling which of course will fail again. Instead, let's return a negative error code and stop polling. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vhost/vhost.h')
-rw-r--r--drivers/vhost/vhost.h8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index 44591ba..11ee13d 100644
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -120,10 +120,10 @@ long vhost_dev_ioctl(struct vhost_dev *, unsigned int ioctl, unsigned long arg);
int vhost_vq_access_ok(struct vhost_virtqueue *vq);
int vhost_log_access_ok(struct vhost_dev *);
-unsigned vhost_get_vq_desc(struct vhost_dev *, struct vhost_virtqueue *,
- struct iovec iov[], unsigned int iov_count,
- unsigned int *out_num, unsigned int *in_num,
- struct vhost_log *log, unsigned int *log_num);
+int vhost_get_vq_desc(struct vhost_dev *, struct vhost_virtqueue *,
+ struct iovec iov[], unsigned int iov_count,
+ unsigned int *out_num, unsigned int *in_num,
+ struct vhost_log *log, unsigned int *log_num);
void vhost_discard_vq_desc(struct vhost_virtqueue *);
int vhost_add_used(struct vhost_virtqueue *, unsigned int head, int len);
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