[Qemu-devel] [PULL 02/13] vfio: make the 4 bytes aligned for capability size

From: Alex Williamson <alex.williamson@redhat.com>
To: qemu-devel@nongnu.org
Cc: Chen Fan <chen.fan.fnst@cn.fujitsu.com>,
	Marcel Apfelbaum <marcel@redhat.com>,
	"Michael S. Tsirkin" <mst@redhat.com>
Subject: [Qemu-devel] [PULL 02/13] vfio: make the 4 bytes aligned for capability size
Date: Thu, 18 Feb 2016 13:05:57 -0700	[thread overview]
Message-ID: <20160218200557.29220.98603.stgit@gimli.home> (raw)
In-Reply-To: <20160218200419.29220.39836.stgit@gimli.home>

From: Chen Fan <chen.fan.fnst@cn.fujitsu.com>

this function search the capability from the end, the last
size should 0x100 - pos, not 0xff - pos.

Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
---
 hw/vfio/pci.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 49f3d2d..e671506 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -1505,7 +1505,8 @@ static void vfio_unmap_bars(VFIOPCIDevice *vdev)
  */
 static uint8_t vfio_std_cap_max_size(PCIDevice *pdev, uint8_t pos)
 {
-    uint8_t tmp, next = 0xff;
+    uint8_t tmp;
+    uint16_t next = PCI_CONFIG_SPACE_SIZE;
 
     for (tmp = pdev->config[PCI_CAPABILITY_LIST]; tmp;
          tmp = pdev->config[tmp + 1]) {
