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xen: pvhvm: make it clearer that XEN_UNPLUG_* define bits in a bitfield

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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>
This commit is contained in:
Ian Campbell 2010-08-23 12:01:35 +01:00
parent 1dc7ce99b0
commit 9c35e90c6f
1 changed files with 9 additions and 6 deletions
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15
include/xen/platform_pci.h
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@ -16,12 +16,15 @@
#define XEN_IOPORT_PROTOVER (XEN_IOPORT_BASE + 2) /* 1 byte access (R) */ #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_IOPORT_PRODNUM (XEN_IOPORT_BASE + 2) /* 2 byte access (W) */
#define XEN_UNPLUG_ALL_IDE_DISKS 1 #define XEN_UNPLUG_ALL_IDE_DISKS (1<<0)
#define XEN_UNPLUG_ALL_NICS 2 #define XEN_UNPLUG_ALL_NICS (1<<1)
#define XEN_UNPLUG_AUX_IDE_DISKS 4 #define XEN_UNPLUG_AUX_IDE_DISKS (1<<2)
#define XEN_UNPLUG_ALL 7 #define XEN_UNPLUG_ALL (XEN_UNPLUG_ALL_IDE_DISKS|\
#define XEN_UNPLUG_UNNECESSARY 8 XEN_UNPLUG_ALL_NICS|\
#define XEN_UNPLUG_NEVER 16 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) { static inline int xen_must_unplug_nics(void) {
#if (defined(CONFIG_XEN_NETDEV_FRONTEND) || \ #if (defined(CONFIG_XEN_NETDEV_FRONTEND) || \