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authorIan Campbell <ian.campbell@citrix.com>2010-08-23 12:01:35 +0100
committerIan Campbell <ian.campbell@citrix.com>2010-08-23 12:01:35 +0100
commit9c35e90c6fcf7f5baf27a63d9565e9f47633f299 (patch)
treec3e311c13f4c1815c729c70f6c20b79175673236 /include/xen
parent1dc7ce99b091a11cce0f34456c1ffcb928f17edd (diff)
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xen: pvhvm: make it clearer that XEN_UNPLUG_* define bits in a bitfield
by defining in terms of (1<<N). XEN_UNPLUG_UNNECESSARY and XEN_UNPLUG_NEVER are only used within the kernel and are not defined as a bit on the unplug IO port. Therefore use a bit which is outside the potentially valid range of the 16 bit IO port. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Acked-by: Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>
Diffstat (limited to 'include/xen')
-rw-r--r--include/xen/platform_pci.h15
1 files changed, 9 insertions, 6 deletions
diff --git a/include/xen/platform_pci.h b/include/xen/platform_pci.h
index 590ccfd8264..a785a3b0c8c 100644
--- a/include/xen/platform_pci.h
+++ b/include/xen/platform_pci.h
@@ -16,12 +16,15 @@
#define XEN_IOPORT_PROTOVER (XEN_IOPORT_BASE + 2) /* 1 byte access (R) */
#define XEN_IOPORT_PRODNUM (XEN_IOPORT_BASE + 2) /* 2 byte access (W) */
-#define XEN_UNPLUG_ALL_IDE_DISKS 1
-#define XEN_UNPLUG_ALL_NICS 2
-#define XEN_UNPLUG_AUX_IDE_DISKS 4
-#define XEN_UNPLUG_ALL 7
-#define XEN_UNPLUG_UNNECESSARY 8
-#define XEN_UNPLUG_NEVER 16
+#define XEN_UNPLUG_ALL_IDE_DISKS (1<<0)
+#define XEN_UNPLUG_ALL_NICS (1<<1)
+#define XEN_UNPLUG_AUX_IDE_DISKS (1<<2)
+#define XEN_UNPLUG_ALL (XEN_UNPLUG_ALL_IDE_DISKS|\
+ XEN_UNPLUG_ALL_NICS|\
+ XEN_UNPLUG_AUX_IDE_DISKS)
+
+#define XEN_UNPLUG_UNNECESSARY (1<<16)
+#define XEN_UNPLUG_NEVER (1<<17)
static inline int xen_must_unplug_nics(void) {
#if (defined(CONFIG_XEN_NETDEV_FRONTEND) || \