linux-kernel - [PATCH 4/6] xen: xen-pciback: use xenbus_map_ring

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Date:	Thu, 15 Sep 2011 13:40:09 +0100
From:	David Vrabel <david.vrabel@...rix.com>
To:	xen-devel@...ts.xensource.com
CC:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	linux-kernel@...r.kernel.org,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	David Vrabel <david.vrabel@...rix.com>
Subject: [PATCH 4/6] xen: xen-pciback: use xenbus_map_ring_page() to map rings

From: David Vrabel <david.vrabel@...rix.com>

xenbus_map_ring_valloc() is deprecated in favour of
xenbus_map_ring_page().

Signed-off-by: David Vrabel <david.vrabel@...rix.com>
---
 drivers/xen/xen-pciback/pciback.h |    1 +
 drivers/xen/xen-pciback/xenbus.c  |    7 +++----
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/xen/xen-pciback/pciback.h b/drivers/xen/xen-pciback/pciback.h
index a0e131a..956aef9 100644
--- a/drivers/xen/xen-pciback/pciback.h
+++ b/drivers/xen/xen-pciback/pciback.h
@@ -32,6 +32,7 @@ struct xen_pcibk_device {
 	struct xenbus_watch be_watch;
 	u8 be_watching;
 	int evtchn_irq;
+	struct page *ring_page;
 	struct xen_pci_sharedinfo *sh_info;
 	unsigned long flags;
 	struct work_struct op_work;
diff --git a/drivers/xen/xen-pciback/xenbus.c b/drivers/xen/xen-pciback/xenbus.c
index 978d2c6..41bfefc 100644
--- a/drivers/xen/xen-pciback/xenbus.c
+++ b/drivers/xen/xen-pciback/xenbus.c
@@ -79,7 +79,7 @@ static void xen_pcibk_disconnect(struct xen_pcibk_device *pdev)
 
 	spin_lock(&pdev->dev_lock);
 	if (pdev->sh_info != NULL) {
-		xenbus_unmap_ring_vfree(pdev->xdev, pdev->sh_info);
+		xenbus_unmap_ring_page(pdev->xdev, pdev->ring_page);
 		pdev->sh_info = NULL;
 	}
 	spin_unlock(&pdev->dev_lock);
@@ -107,13 +107,12 @@ static int xen_pcibk_do_attach(struct xen_pcibk_device *pdev, int gnt_ref,
 			     int remote_evtchn)
 {
 	int err = 0;
-	void *vaddr;
 
 	dev_dbg(&pdev->xdev->dev,
 		"Attaching to frontend resources - gnt_ref=%d evtchn=%d\n",
 		gnt_ref, remote_evtchn);
 
-	err = xenbus_map_ring_valloc(pdev->xdev, gnt_ref, &vaddr);
+	err = xenbus_map_ring_page(pdev->xdev, gnt_ref, &pdev->ring_page);
 	if (err < 0) {
 		xenbus_dev_fatal(pdev->xdev, err,
 				"Error mapping other domain page in ours.");
@@ -121,7 +120,7 @@ static int xen_pcibk_do_attach(struct xen_pcibk_device *pdev, int gnt_ref,
 	}
 
 	spin_lock(&pdev->dev_lock);
-	pdev->sh_info = vaddr;
+	pdev->sh_info = page_address(pdev->ring_page);
 	spin_unlock(&pdev->dev_lock);
 
 	err = bind_interdomain_evtchn_to_irqhandler(
-- 
1.7.2.5

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