linux-kernel - [PATCH 4/5] virtio-scsi: pass struct virtio

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Date:	Tue, 28 Aug 2012 13:54:16 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	linux-scsi@...r.kernel.org, kvm@...r.kernel.org,
	rusty@...tcorp.com.au, jasowang@...hat.com, mst@...hat.com,
	virtualization@...ts.linux-foundation.org
Subject: [PATCH 4/5] virtio-scsi: pass struct virtio_scsi to virtqueue completion function

This will be needed soon in order to retrieve the per-target
struct.

Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
---
 drivers/scsi/virtio_scsi.c |   17 +++++++++--------
 1 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
index 62fec04..6414ea0 100644
--- a/drivers/scsi/virtio_scsi.c
+++ b/drivers/scsi/virtio_scsi.c
@@ -107,7 +107,7 @@ static void virtscsi_compute_resid(struct scsi_cmnd *sc, u32 resid)
  *
  * Called with vq_lock held.
  */
-static void virtscsi_complete_cmd(void *buf)
+static void virtscsi_complete_cmd(struct virtio_scsi *vscsi, void *buf)
 {
 	struct virtio_scsi_cmd *cmd = buf;
 	struct scsi_cmnd *sc = cmd->sc;
@@ -168,7 +168,8 @@ static void virtscsi_complete_cmd(void *buf)
 	sc->scsi_done(sc);
 }
 
-static void virtscsi_vq_done(struct virtqueue *vq, void (*fn)(void *buf))
+static void virtscsi_vq_done(struct virtio_scsi *vscsi, struct virtqueue *vq,
+			     void (*fn)(struct virtio_scsi *vscsi, void *buf))
 {
 	void *buf;
 	unsigned int len;
@@ -176,7 +177,7 @@ static void virtscsi_vq_done(struct virtqueue *vq, void (*fn)(void *buf))
 	do {
 		virtqueue_disable_cb(vq);
 		while ((buf = virtqueue_get_buf(vq, &len)) != NULL)
-			fn(buf);
+			fn(vscsi, buf);
 	} while (!virtqueue_enable_cb(vq));
 }
 
@@ -187,11 +188,11 @@ static void virtscsi_req_done(struct virtqueue *vq)
 	unsigned long flags;
 
 	spin_lock_irqsave(&vscsi->req_vq.vq_lock, flags);
-	virtscsi_vq_done(vq, virtscsi_complete_cmd);
+	virtscsi_vq_done(vscsi, vq, virtscsi_complete_cmd);
 	spin_unlock_irqrestore(&vscsi->req_vq.vq_lock, flags);
 };
 
-static void virtscsi_complete_free(void *buf)
+static void virtscsi_complete_free(struct virtio_scsi *vscsi, void *buf)
 {
 	struct virtio_scsi_cmd *cmd = buf;
 
@@ -208,7 +209,7 @@ static void virtscsi_ctrl_done(struct virtqueue *vq)
 	unsigned long flags;
 
 	spin_lock_irqsave(&vscsi->ctrl_vq.vq_lock, flags);
-	virtscsi_vq_done(vq, virtscsi_complete_free);
+	virtscsi_vq_done(vscsi, vq, virtscsi_complete_free);
 	spin_unlock_irqrestore(&vscsi->ctrl_vq.vq_lock, flags);
 };
 
@@ -331,7 +332,7 @@ static void virtscsi_handle_event(struct work_struct *work)
 	virtscsi_kick_event(vscsi, event_node);
 }
 
-static void virtscsi_complete_event(void *buf)
+static void virtscsi_complete_event(struct virtio_scsi *vscsi, void *buf)
 {
 	struct virtio_scsi_event_node *event_node = buf;
 
@@ -346,7 +347,7 @@ static void virtscsi_event_done(struct virtqueue *vq)
 	unsigned long flags;
 
 	spin_lock_irqsave(&vscsi->event_vq.vq_lock, flags);
-	virtscsi_vq_done(vq, virtscsi_complete_event);
+	virtscsi_vq_done(vscsi, vq, virtscsi_complete_event);
 	spin_unlock_irqrestore(&vscsi->event_vq.vq_lock, flags);
 };
 
-- 
1.7.1


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